Quick overview from the supplier:
Edifier W830BT Black / Bluetooth and Wired On-ear headphones with microphone, Bluetooth v4.1 aptX,3.5 mm jack, Dynamic driver 40 mm, Frequency response 20 Hz-20 kHz, On-ear controls, Ergonomic Fit, Battery Lifetime (up to) 80 hr, charging time 4 hr
