The Porodo Headphones Boast Bluetooth 5.0 Support And A Frequency Range Of 20-20Khz, With Bluetooth Protocols Including Hfp, Spp, Avbci, And Azdp. They Offer A Swift 2-Hour Charging Time, Providing Up To 21 Hours Of Playtime On A Full Charge. Alternatively, A 15-Minute Charge Yields 1 Hour Of Use. Featuring Comfortable Over-Ear Pads And An Adjustable Head Mount, They Excel In Both Music Playback And Call Handling. Product Specifications: Model: Pd-X1008Wlh Battery Capacity: 200Mah Re-Charging Time: 1.5 Hours Sensitivity: 108±3Db Frequency Range: 20~20 Khz Form Factor: Over-Ear Connectivity: Bluetooth, Wireless Dimensions: 20.4 X 9.6 X 25.1 Cm Weight: 20 Gm