CP0249B Features Bluetooth wireless audio transmission Hands-free call function Automatic switch between calling and music Equipped with hidden microphone Built-in rechargeable lithium battery General Specs Brand & Model Rapoo H6020 Color Black Sound Stereo sound Type Bluetooth headset Bluetooth v2.1+EDR Charging Time 3 hours Working Time 12 hours Compatibility Mobile phones and computers with Bluetooth Package Details Weight: 206.51 g Size: 23.00*16.3*3.2 cm Package Includes * Rapoo H6020 Stereo Sound Bluetooth Wireless Headset