Specifications:The soft earmuff design makes the ears comfortable to wear without pressure, and has good breathability, which enhances the wearing comfort.Bluetooth 5.0 technology makes the transmission more stable, and there is no delay, no noise, the connection is faster and more stable, and there is no need to worry about listening to music and intermittent calls.The bluetooth-compatible 5.0 chip greatly improves compatibility, allowing smooth playback, no delay in voice, and no interference.Lightweight and compact design make it easy to carry and use anytime, anywhere.It supports DC5V charging, which can be fully charged in 2 hours.The battery capacity is large enough to allow you to use the headset for a long time.Item Name: HeadphoneMaterial: ABSDriver: 40mmImpedance: 32 OHMBluetooth Version: bluetooth-compatible V5.0Bluetooth Using Frequency Band: 2.4GHzPower Level: CLASS IIBluetooth Distance: 10 Meters(Barrier-Free)Frequency Response Range: 20-20000HzProtocol: A2DP/AVRCP Stereo Audio Transmission and Remote ControlCharging Time: 2 HoursTalk time: 8-10 HoursMusic Tim: 8-10 HoursStandby Time: 120 HoursBattery Capacity: 250MAH(Included)Charging Power Supply: DC5V Power Supply(Round Hole Interface), Computer USB Port, Mobile Phone Charger, Car ChargerCompatible Mobile Phones: Compatible with 99 Percent Mobile Phones with bluetooth-compatible Functions for Android, for Apple, for Microsoft and for Symbian SystemsFeatures: Comfortable to Wear, Stable Transmission, No Delay, No Noise, Faster Connection, Easy to CarrySize: 14cm x 13cm x 6cm/5.51" 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 Headphone1 x Audio Cable1 x Charging Cable1 x User Manual