Wireless Transmitter for DX, D9tx, D9, D6i, D4i, HELO2 & Vytec

Wireless Transmitter for DX, D9tx, D9, D6i, D4i, HELO2 & Vytec: 
It provides the diver with tank pressure and air-time information, as well as a tank pressure bar graph. 
Real-time tank pressure data is stored in the memory, and can be later analyzed using the memory or PC interface functions.
Green LED light indicates active data transmission
Battery life approx. 2 years (100 dives/year)