Design Product color: Black Weight and dimensions Product height: 46 mm Product width: 84 mm Product weight: 47 g Product depth: 23 mm Efficiency FM Radio: Yes Number of channels: 2 channels Maximum range: 1600 m Temperature range (operation): -20 - 55 °C Bluetooth version: 5.2 Package contents User Manual: Yes Number of pieces: 2 Battery Standby time: 10 days Talk time: 13 h Charging time: 2 hours