Specifications:The wireless headphone has bluetooth-compatible 4.2 chip, which has fast and stable connection.Ergonomic design with soft earmuff makes it comfortable to wear.The earmuff can reduce the noise, bringing you excellent listening experience.3.5mm audio cable is supported.Foldable design makes it easy to carry and store.Item Name: Wireless HeadphoneMaterial: ABS, MetalBluetooth Version: 4.2Transmission Space: 10m (Barrier Free)Drive: 40mmImpedance: 32ohmBluetooth Frequency Band: 2.4GHzFrequency Response: 20-20000HzSupported Protocols: A2DP /AVRCPCharging Time: about 2 HoursTalk Time: about 8-10 HoursMusic Time: about 8-10 HoursStandby Time: about 120 HoursBattery Capacity: 250mAh (Included)Features: Wireless, Rechargeable, FoldableSize: 15cm x 13cm x 6cm/5.91" x 5.12" x 2.36" (Approx.)Notes:Due to the light and screen setting difference, the item& 39;s color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:1 x Wireless Headphone1 x Audio Cable1 x USB Charging Cable