Design Security features: Waterproof Product color: Black Weight and dimensions Product width: 78 mm Product weight: 35 g Product height: 47 mm Product depth: 19 mm Efficiency Maximum range: 600 m Temperature range (operation): -20 - 55 °C Bluetooth version: 5.2 Number of stations: 6 USB port: Yes Supported USB type: USB Type-C Device software updates: Yes Number of channels: 2 channels FM Radio: Yes RDS Tuner Included: Yes Package contents Number of pieces: 1 Cables: USB Battery Standby time: 10 days Talk time: 13 h Charging time: 2 hours