Wireless Headphones - with microphone, True Wireless earplugs, semi-closed construction, Bluetooth 5.0, supports A2DP, aptX, AVRCP, HFP and HSP, active noise control (ANC), voice Assistant, track shuffle, taking calls, converter: 7mm, battery life of up to 21 hr(s) (3,5 hr(s)+17,5 hr(s))