Sandberg Bluetooth Office Headset Pro+ is a stylish and exceptionally comfortable wireless stereo headset, optimised for use with a mobile phone or for online conversations on your PC. It ensures crystal-clear voice reproduction. The headset can be connected with two devices simultaneously; for example, both your PC and your mobile phone. With an integrated “busy” light-emitting diode, enabling your colleagues to easily see whether you are busy with a conversation in the headset. The package includes an elegant base, in which the headset can be recharged when it is not in use.   Bluetooth 5.0, CSR chipset Frequency range: 2.4 GHz-2.4835 GHz Multiple-points technology for Dual Device connection Supports A2DP, AVRCP, HFP, HSP, AAC Up to 30 metres wireless range Speaker frequency: 20Hz - 20KHz Speaker Sensitivity: 118dB ± 3dB Microphone sensitivity: -38dB ± 3dB Blue/Red indicator LEDs 1 Multi-function button Vol +/- buttons, Mute button Charging time: Approx. 2 hours Talking time: Approx. 20 hours Stand-by time: Approx. 200 hours Charging input: Micro USB DC 5V Battery capacity: 320 mAh / 3.7V   Product Package Dimensions Height 19.5 cm Width 15.5 cm Depth 6.6 cm Weight 350 g