Design Product color: Black IP protection class: IP67 Security features: Waterproof Weight and dimensions Product depth: 25 mm Product width: 85 mm Product height: 49 mm Product weight: 51 g Efficiency Automatic volume control: Yes Headset mode: Yes Bluetooth profiles HFP A2DP AVRCP FM Radio: No Device software updates: Yes Bluetooth version: 5.2 Maximum range: 1600 m Package contents Cables: USB Type-A to USB Type-C Quick Start Guide: Yes Number of pieces: 1 Mounting kit: Yes Battery Talk time: 18 h Rechargeable battery: Yes Charging time: 2.5 hours 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.