Description: This is a standard 88 channel maritime intercom with a frequency range of TX: 156.00MHz-161.450 MHz, RX:156.00MHz-163.425 MHz, Power 5W, main functions: IP67 dustproof and waterproof, can prevent floods for 30 minutes at a water depth of 1 meter, floats in the water with flashing sound and buzzing sound, speaker vibration and drainage function, dual/triple frequency duty, automatic scanning function, ultra long standby, is an ideal product for offshore operation, entertainment and leisure Main functions: ? Strong buoyancy, fashionable, easy to use, ultrathin, lightweight, highperformance ? USB charging (Micro-B USB type) ? IPX7 waterproof structure (30 minutes at 1m water depth) Floating alarm ? Drainage function ? 11 hour battery life, 4step battery life indicator ? Dual/triple watch function ? Enable the monitoring function and mute Automatic scanning function LCD automatic backlight ? Emergency switch 16/9 channels ? Fast charging ? High/Low Power Switching ? Weather Warning General specifications: commonly TX frequency range: 1560000? 161.450MHz Received: 1560000? 163.425MHz FM (16K0G3E) Battery pack DC3.7V, 1500mAh lithiumion battery Frequency stability ± 10ppm Working temperature -15 ° C+ 55°C Dimensions (width x height x depth) 140mm x 64mm x 35mm