Feature:1. Fashion design, let music surround your life at any time.2. Hands-free function, free your hands.3. Built-in rechargeable lithium ion battery, long working time. Supports battery level display for iPhone, which makes it easy to know when to charge.4. Brand new waterproof structure design, compatible for iOS 4.0 and above, supports for Siri voice control, and supports Android voice control, convenient, fast and intelligent.5. Using the latest Bluetooth 5.0+EDR technology, excellent signal transmission, ultra-low power consumption, automatic phone call answering function, switchable manual phone call answering function, safe and fast; 6. Built-in high anti-interference microphone, it supports hands free phone call answering and hang up. Sound quality fidelity supports previous or next song functions, volume up and down, playback, automatic pause, callback and other functions, easy to operate.Specification:Bluetooth version: V5.0+EDRFrequency: 2.40GHz-2.480GHzWireless range: 20-30 meters (depending on equipment)Microphone transmission distance: up to 1 meterLithium-ion battery: 3.7V/820mAhBattery life: up to 70 hoursCharging voltage: 5VStandby time: 280 hoursPackage includes:1 X Headset1 X Headset Cable1 X Cable1 X Manual