Waterproof level: IPX8 Material: Liquid food grade silicone Highly waterproof, 1 meter water depth can be used continuously for 90-120 minutes Boneless full rubber package USB pinhole charging, generally 1-2 hours full, 10 frequency vibration Mobile phone APP Bluetooth connection can interact remotely Android system can add cloud friends APP has DIY mode, music mode, voice control mode, remote friend mode, own mode... APP is constantly updated, wifi connection, and video interaction is possible.