? Floating and flash

? Built-in regular charger circuitry: No charging stand required, no exposed charging contacts, avoiding corrosion of battery contacts

? Energy-saving 3.7V circuitry: (similar to mobile phone battery)

? 600mW audio output, louder volume

? Dual-frequency/tri-frequency value-keeping function: can monitor 3 channels at the same time (work channel, channel 16, call channel)

? One channel to select channel 16 and call channel (call channel can be customized)

? Speaker automatic water removal function

? IPX7 waterproof: 1 meter 30 minutes underwater, no water