Feature:1. Compatible with 99% for Android, for IOS, for Windows, for Symbian mobile phones with Bluetooth function, the active noise reduction headset uses advanced technology.2. It can block background noise, and you can immerse yourself in the music world even in busy streets/offices/buses/trains/cars, etc. The noise cancellation function works well in wireless mode.3. Noise-cancelling heavy bass stereo music foldable earphones, bluetooth sports earphones, wireless bluetooth stereo earphones, for music/games/computers, support memory card with microphone cable. Specification:Condition: 100% brand newItem type: Wireless Bluetooth HeadsetMaterial: ABSWeight: Approx. 401g Model: EL-B5Drive: about 40mmImpedance: 32ΩBluetooth version: Bluetooth V5.0Bluetooth use frequency range: 2.4GHzPower level: CLASS IIBluetooth distance: 10 meters without barriersWith A2DP/AVRCP high-quality stereo audio transmission and remote control protocolCharging time: about 2 hoursTalk time: about 10-12 hoursMusic time: about 10-12 hoursStandby time: about 120 hoursBattery capacity: 250MAH (polymer lithium battery)Charging power supply: DC5V power supplyCompatible mobile phones: compatible for Android, for IOS, for Windows, for Symbian 99% mobile phones with Bluetooth functionPackage List:1 x Headphone1 x USB charging cable1 x AUX audio cable1 x Instruction