FAQ for Underwater Transceiver-Mini (Regular Updates)
No. Pre-Purchase Information Answer
1 Is the DIVINTOK Underwater Transceiver-Mini compatible with other brands' underwater walkie-talkies? Compatibility: 
Not compatible, so they cannot communicate with each other.
2 Will using the Underwater Transceiver-Mini affect or change traditional diving techniques? Impact on Diving Techniques: 
No. Our product is an external device and has been professionally evaluated by PADI. It does not alter the operation of traditional diving techniques.
3 Can the Tooth Hook in the Mouthpiece Microphone be replaced? Yes, it can be replaced.
4 How many channels does the Underwater Transceiver-Mini support? Number of Channels: 
Currently, it supports only one channel.
5 How many Underwater Transceiver-Mini units can be used simultaneously in an underwater environment? Connection Quantity Recommendation: 
Theoretically, there is no limit on the number of connections. However, to maintain orderly operation, it is recommended not to connect more than 5 Underwater Transceiver-Mini units simultaneously.
No. If you encounter the following situations while diving Answer
1 What should I do if the upper edge of the Mouthpiece Microphone presses against the mask skirt, causing the mask to leak and requiring frequent clearing? 1. Avoid excessive tilting of your head underwater:
The Mouthpiece Microphone is positively buoyant, and tilting your head up may cause it to press against the mask skirt, leading to leaks. It’s recommended to keep your head level and move slowly when adjusting your head position.
2. Choose a low-volume mask to pair with the Mouthpiece Microphone:
It’s advisable to select a low-volume mask for use with the Mouthpiece Microphone to minimize the risk of interference and leaks.
2 What should I do if the Tooth Hook presses against my gums, causing discomfort in my mouth? Tooth Hook Adaptation Advice:
As a new structure, the Tooth Hook might initially cause a foreign object sensation in the mouth. However, with increased use, your mouth will gradually adapt, and the discomfort will diminish. To help with this, try relaxing your jaw and practice finding a position where the Tooth Hook doesn’t press against your gums but also stays securely in place.
3 What should I do if the cable connecting the Underwater Receiver and the Mouthpiece Microphone hinders movement underwater? Cable Management Advice:
You can use the Velcro strap included in the package for cable management. For detailed steps, please refer to the [Quick Start Video](link to video).
4 What should I do if the Underwater Receiver is unstable when attached to the mask strap and tends to lift up underwater? 1. Check the width of the mask strap: 
   Ensure that the mask strap is no wider than 2 centimeters. A wider strap may cause the Underwater Receiver to be unstable.
2. Adjust the positioning of the Underwater Receiver:
  
 Adjust the mask strap and Underwater Receiver to the recommended position. For detailed steps, please refer to the [Quick Start Video](link to video).
5
Is it normal to hear static noise in the Underwater Receiver?
1. Remove water droplets from the microphone:
   Ask your dive buddy to press the second-stage regulator to clear any water droplets from the microphone inside the Mouthpiece Microphone. This may improve audio quality.
2. Check environmental factors:
   
Determine if the static noise is due to complex terrain, significant obstructions, or excessive distance between users. Try communicating face-to-face to see if the issue persists.
3. Eliminate noise interference: 
   
Check for noise sources such as boat engines on the surface or swimming pool circulation systems that might be causing interference.
4. Technical Support:
   If the issue is still unresolved, please contact our technical support team (FAE) at support@divintok.com for assistance.
6 How can I prevent the Mouthpiece Microphone from taking in water? 1. Check the connection:
   Ensure that the Mouthpiece Microphone is securely connected to the second stage regulator, using a zip tie to guarantee stability.

2. Adjust the fit: 
   
Check whether the Mouthpiece Microphone is tilting up or down and adjust it to fit snugly against your face. For detailed steps, please refer to the [Quick Start Video](link to video).

3. Seek technical support: 
   
If the issue persists, please contact our technical support team (FAE) at support@divintok.com for assistance.
7 What should I do if the Mouthpiece Microphone starts leaking while diving? Tilt your head down and press the purge valve on the second stage regulator to drain the water.
8 What should I do if the volume of the Underwater Receiver is normal, but I still can't hear the other person clearly? Watch the Listening and Speaking Techniques Video:
Please refer to the listening and speaking techniques provided in our [Quick Start Video](link to video).
9 What should I do if the volume of the Underwater Receiver is too low? 1. Adjust the volume:
   The product is set to low-volume mode by default. You can switch to high-volume mode by double-clicking the PTT button. For more details, please refer to the [Quick Start Video](link to video).

2. Adjust the positioning: 
   Please adjust the Underwater Receiver to the recommended position for optimal listening volume. Detailed instructions can be found in the [Quick Start Video](link to video).
No. Questions Related to the Performance of the Underwater Transceiver-Mini Answer
1 What is the charging time for the Underwater Transceiver-Mini? Charging Time and Maintenance Advice:
Charging takes approximately 3 hours. The indicator light will turn off when charging is complete. Please use a 5V/1A adapter purchased from a reputable source. If the device is not used for an extended period, charge it every three months to preserve battery life.
2 What is the battery life of the Underwater Transceiver-Mini? Battery Life:
With a full charge, it provides approximately 4 hours of continuous use (based on laboratory data).
3 What is the effective communication range of the Underwater Transceiver-Mini? Effective Communication Range: 
Approximately 50 meters, though actual distance may be affected by water conditions.
4 How do you turn the Underwater Transceiver-Mini on and off? Automatic Power On/Off:
The device powers on automatically when submerged to a depth of 30 centimeters and will play a startup sound. It will automatically power off 40 seconds after leaving the water.
FAQ for Surface Transceiver (Regular Updates)
No. Pre-Purchase Information Answer
1 Can the battery in the Surface Transceiver be replaced? Battery Type:
No, the battery cannot be replaced. The Surface Transceiver features a sealed design with a built-in battery that must be charged using the provided charging cable.
2 How many Underwater Transceiver-Mini units can be connected to a single Surface Transceiver at once? Connection Quantity Recommendation:
Theoretically, there is no limit to the number of connections. However, to ensure orderly operation, it is recommended to connect no more than 5 Underwater Transceiver-Mini units simultaneously.
3 Is the DIVINTOK Surface Transceiver compatible with other brands' underwater walkie-talkies? Compatibility: 
Not compatible, so they cannot communicate with each other.
No. If you encounter the following situations during use Answer
1 How to resolve issues with starting or ending recordings? Clicking Too Fast or Too Slow:
The interval between each click to start or end recording should be about 500 milliseconds. Clicking too quickly or too slowly may not activate the recording function. For detailed instructions, please refer to the [Quick Start Video](link to video).
2 Why can't I hear the diver clearly, or why is the audio intermittent? 1. Equipment Issues:
   If you are unable to establish a connection between the Surface Transceiver and the diver, it may indicate a device malfunction. Please return the entire product set for free repair if it is within the warranty period.

2. Environmental Interference: 
   If the call quality is inconsistent, ensure you avoid the adverse conditions mentioned in the manual. For example, issues may arise if the distance between the diver and the Surface Transceiver exceeds 30 meters or if there are obstacles like steep slopes, sunken ships, or tall aquatic plants in the signal path. Try improving these conditions and test again.
3 How to resolve incomplete audio from the surface personnel heard by the diver? 1. Timing for Releasing the PTT Button:
   While in transmission mode, hold the PTT button until the entire message has been sent. Releasing the button prematurely may result in incomplete messages. If multiple people are speaking simultaneously and causing interference, please wait and repeat your message.

2. Signal Obstructions:
   There may be obstructions in the underwater transmission path causing intermittent signals.
4 What should I do if the diver hears unclear audio from the surface personnel? 1. Maintain Proper Distance:
   The recommended distance between the Surface Transceiver and your face is 30 centimeters. Before speaking, call out the diver's name to get their attention.

2. Increase Volume: 
   Surface personnel should try speaking louder.
No. Questions Related to the Performance of the Surface Transceiver Answer
1 Does the Surface Transceiver have waterproof capabilities? Protection Rating:
The device has an IP54 rating, which protects against water splashes from any direction. Avoid dropping the Surface Transceiver into water. It is recommended to use the included anti-loss strap to reduce the risk of accidental drops.
2 How long does it take to charge the Surface Transceiver? Charging Time:
Approximately 2 hours. A steady green light indicates that charging is complete. Please use a 5V/1A adapter purchased from a reputable source.
3 What is the battery life of the Surface Transceiver on a single charge? Battery Life and Charging Advice:
With a full charge, the Surface Transceiver provides approximately 4 hours of continuous use (based on laboratory data). If the battery runs low, you can also use a power bank to continue operation.
4 What is the effective communication range of the Surface Transceiver? Effective Communication Range:
Approximately 75 meters, though actual distance may be affected by water conditions.
5 How long can the built-in memory card store recordings? Storage Capacity:
The Surface Transceiver has a 32GB TF card that can store approximately 320 hours of audio recordings.
6 How many Underwater Transceiver-Mini units can a single Surface Transceiver communicate with simultaneously? Connection Recommendation:
Theoretically, there is no limit to the number of connections. However, to ensure orderly operation, it is recommended to connect no more than 5 Underwater Transceiver-Mini units simultaneously.

FAQ FOR SURFACE TRANSCEIVER (REGULAR UPDATES)

Battery Type:
No, the battery cannot be replaced. The Surface Transceiver features a sealed design with a built-in battery that must be charged using the provided charging cable.

ContConnection Quantity Recommendation:
Theoretically, there is no limit to the number of connections. However, to ensure orderly operation, it is recommended to connect no more than 5 Underwater Transceiver-Mini units simultaneously.

Compatibility:
Not compatible, so they cannot communicate with each other.

Clicking Too Fast or Too Slow:
The interval between each click to start or end recording should be about 500 milliseconds. Clicking too quickly or too slowly may not activate the recording function. For detailed instructions, please refer to the [Quick Start Video](link to video).

1. Equipment Issues:
If you are unable to establish a connection between the Surface Transceiver and the diver, it may indicate a device malfunction. Please return the entire product set for free repair if it is within the warranty period.

2. Environmental Interference:
If the call quality is inconsistent, ensure you avoid the adverse conditions mentioned in the manual. For example, issues may arise if the distance between the diver and the Surface Transceiver exceeds 30 meters or if there are obstacles like steep slopes, sunken ships, or tall aquatic plants in the signal path. Try improving these conditions and test again.

1. Timing for Releasing the PTT Button:
While in transmission mode, hold the PTT button until the entire message has been sent. Releasing the button prematurely may result in incomplete messages. If multiple people are speaking simultaneously and causing interference, please wait and repeat your message.

2. Signal Obstructions:
There may be obstructions in the underwater transmission path causing intermittent signals.

1. Maintain Proper Distance:
The recommended distance between the Surface Transceiver and your face is 30 centimeters. Before speaking, call out the diver's name to get their attention.

2. Increase Volume:
Surface personnel should try speaking louder.

Protection Rating:
The device has an IP54 rating, which protects against water splashes from any direction. Avoid dropping the Surface Transceiver into water. It is recommended to use the included anti-loss strap to reduce the risk of accidental drops.

Charging Time:
Approximately 2 hours. A steady green light indicates that charging is complete. Please use a 5V/1A adapter purchased from a reputable source.

Battery Life and Charging Advice:
With a full charge, the Surface Transceiver provides approximately 4 hours of continuous use (based on laboratory data). If the battery runs low, you can also use a power bank to continue operation.

Effective Communication Range:
Approximately 75 meters, though actual distance may be affected by water conditions.

Storage Capacity:
The Surface Transceiver has a 32GB TF card that can store approximately 320 hours of audio recordings.

Connection Recommendation:
Theoretically, there is no limit to the number of connections. However, to ensure orderly operation, it is recommended to connect no more than 5 Underwater Transceiver-Mini units simultaneously.

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