Experience The Jbl Tune 520Bt Headphones, Delivering Powerful Jbl Pure Bass Sound Through Advanced 5.3 Bt Technology. With Up To 57 Hours Of Playback And Rapid 5-Minute Charging For An Extra 3 Hours Of Battery Life, Enjoy Uninterrupted Listening. Customize Your Sound With The Free Jbl Headphones App And Control Calls, Volume, And Playback Conveniently From The Earcup. Seamless Switching Between Devices Ensures You Never Miss A Call, While The Lightweight, Foldable Design Offers Comfort And Portability For On-The-Go Enjoyment. In The Box: Headphones, Type-C Usb Charging Cable, Detachable Audio Cable, Quick Start Guide. Product Specifications: Manufacturer: Jbl Driver Size: 33 Mm Driver Sensitivity: 102 Db Frequency Response: 20 Hz – 20 Khz Weight: 157 Gm Bluetooth Version: 5.3 Audio Cable Length: 0.2 M Ear Cup Depth: 1.7 Cm External Size: 3.2 X 7.3 Cm (Hxw) Internal Size: 3.2 X 3.2 Cm (Hxw) Playtime: 57 Hrs Charging Time: 2 Hours