Porodo Headphones supports Bluetooth version 5.0. Its frequency range is 20-2KHz and the Bluetooth protocol is HFP, SPP, AVBCI, and AZDP. It takes 2 hours for this headphone to be full charge. When it is going to be full of charge you can use it for 21hours or in another hand you can find 21Hours playtime or if you’re in the hurry you can charge it for 15 minutes and use it for 1Hour. The pure Bass FM wireless Headphone is comfortable over-ear pad with an adjustable head Mount.