The transceiver communicates wirelessly with your compatible watch. On the surface, it uses ANT^® technology. Underwater, it uses the SubWave™ sonar network. Your body, drysuit, and dive equipment can obstruct the signal, particularly while underwater. For the best reception, all transceivers in your group should have clear lines of sight to the watch. To help prevent blocking the signal with your body or equipment, you should follow these tips.

• You should install the transceiver on the same side of the tank as the wrist wearing your watch. For example, if you wear your watch on your left wrist, you should install the transceiver on the left side of the tank regulator.

  
  
  
• For the best reception, you should wear the tank high on your back. This allows the transceiver to have a clear line of sight over your shoulders.
  
  

• You should install the transceiver at least 7 cm (3 in.) from your body.

  
  
  

• If you wear your tank inverted with the regulator at the bottom, you can use a high-pressure hose to relocate the transceiver to have a clear line of sight over your shoulders.

• If you lose the signal from your transceiver, you should move your arm until the signal is restored.

• If you lose the signal from another diver, you should change your body position until the signal is restored. If your body is between the transceiver and another diver, it may obstruct the signal from that diver's transceiver.