The Buddy Phone D2 is a digital, micro-miniature, ultrasonic transceiver allowing communication between two or more scuba divers and / or surface stations. (Sold Separately, Does Not Include FFM)
Specifications
Nominal Range: 50 to 500 meters depending on sea conditions & noise levels.
Transmission Type: Ultrasound using upper single sideband (USB)
Transmit Output Power 0.5 watts PEP
Standard Frequency (PEP):Recall & tone: Freq. A (Channel 1): 32.768 kHz USB
Freq. B (Channel 4): 31.250 kHz
Audio Bandwidth: 300 to 3,000 Hz
Automatic Gain Control: Greater than 80 dB
Earphone: Ceramic
Microphone: High Quality Microphone
Transducer: Ceramic cylinder
Battery Type: Alkaline 9V. Batteries not included
Maximum Operating Depth: 130 feet in sea water (fsw)