Design Product color: Black Security features: Waterproof Weight and dimensions Product weight: 47 g Product height: 46 mm Product width: 23 mm Product length: 84 mm Efficiency Maximum range: 1600 m FM Radio: Yes Temperature range (operation): -20 - 55 °C USB port: Yes Supported USB type: USB Type-C Number of channels: 2 channels Device software updates: Yes Bluetooth version: 5.2 Package contents Cables: USB Number of pieces: 2 Battery Talk time: 13 h Charging time: 2 hours Standby time: 10 days Safety warning Warnings Check the condition of the batteries regularly to prevent leakage. Do not use near sources of heat or fire. Keep away from children.