Marine Walkie Talkies IP67 Waterproof Clear Sound Short Wave Walkie Talkie 26.965‑27.405MHz Item Type: Marine Walkie Talkies Material: ABS Modulation Mode: AM/FM Frequency Range: 26.965-27.405MHz Frequency Tolerance: ±5.0ppm Frequency Control: PLL Synthesizer Operating Temperature range: -20°C to +55° Current Consumption Send: 2A Maximum Reception: Stationary 0.3A VOL Maximum: 0.8A Antenna Connector: UHF, SO-239 Send Power Output: 4W FM/AM Transmission Interference: Less than 4nW(-54dBm) Frequency Response: 300-3000Hz Modulation Signal Distortion: Less than 5% Output Impedance: 50Ω Receive Sensitivity: Lower than luV at 10dB(S+N)/N Image Suppression: 70dB Adjacent Channel Suppression: 60dB Intermediate Frequency Free: 1st 10.695MHz 2nd 455KHz Automatic Gain Control(Acc): For inputs of 10-50000uV, variation in audio output is less than 10dB and noise is less than 1uV Audio Output Power: 3W into 8Ω Frequency Response: 300-3000Hz Battery Type: 1 x 4100mah Lithium Battery (Included) Spare Battery Warehouse: 8 x AA Battery (Not Included)