Edifier W600BT Bluetooth Wireless Headphone Headset Stereo Bluetooth V5.1 Over-Ear Pads Built-in Microphone 30 Hours Playtime Grey Features • Bluetooth V5.1 ensures stable connection • 40mm NdFeB driver delivers detailed and powerful sound • Up to 30 hours audio playback • Soft over-ear pads for all-day comfort • Simple design for an elegant look and feel • Connection with two Bluetooth devices simultaneously supported • Built-in microphone supports phone call under Bluetooth connection • 3.5mm audio cable included for wired connection Specifications Bluetooth version V5.1 Audio codecs SBC Driver unit Φ40mm NdFeB driver Playback time about 30 hours Charging time about 3 hours Battery capacity 350mAh Frequency response 20Hz-20kHz Sound pressure level 96±3dB SPL (A) Impedance 32Ω Charging port USB Type-C Product Weight 168g (net weight) Inner Carton 190×88×230mm (L×W×H), 338g (gross weight)