Wireless Mini Headset Bluetooth 5.1 Sport Headset Portable Charging Box Digital Display Clamshell Call Features: This true wireless Bluetooth earphones feature Bluetooth 5.1 chip, automatic boot pairing, built- active noise reduction IC, call and large capacity lasting battery life. This product features 14. graphene diaphragm, alloy sound-transmitting network, sound, intelligent noise reduction, 108dB sensitivity,- copper voice coil. Two Connection : double to use, ear listening to enjoy alone, listening to HiFi stereo both ears. It ensures 5.0 Bluetooth game without delay, and the cabin can be used as mobile phone bracket and mobile phone emergency power supply for multi-function use. With IPX6 rating, don't worry about rain and sweat Product Description: parameter: Bluetooth version: 5.1 (Binaural call) Support protocol: A2DP, AVRCP, HFP, HSP, SPP Working temperature: -10 ° — 55 ° Charging voltage: 5V-500MA Headphone speaker: φ8mm Headphone battery capacity: 50MAH Storage box battery capacity: 2000MAH distance:> 10m Operation: fingerprint Talk time: 4-5 hours : 4-5 hours Headphone charging time: 1 hour Storage box charging time: hours Support system: all Bluetooth-enabled devices and mobile phones Package Included: 2x headphones 1x data cable 1x charging compartment 1x instruction manual 4x ear caps