Wireless bicycle LED lamp with turn signal function. The device is mounted on the bike's seat post. Significantly enhances road safety through signaling direction changes. Specifications: waterproof case IPX4, turn signal indication, 5 lighting modes (steady red light, flashing red light, left and right turn signal, brake light), lamp mounting on seat post (diameter). 3.5-2.5 cm) control from the level of a wireless remote control mounted on the handlebars (diam. leader: 2.5-2cm) remote control power supply: built-in 180mAh battery lamp power supply: built-in 2200mAh battery 3.7V quick connect/disconnect lamp system, remote control and lamp charging interface: USB-C (charging cable included)