180°adjustable ear-fit design allows you to adjust the angle to fit on your right or left ear.Use CVC intelligent noise reduction technology, it can restore high fidelity sound quality. It can cancel background and wind noise when in crowds, making you easy to hear.The earphone has super long battery life. Up to 180 hours super long standby time, up to 20 hours of calling time, up to 18 hours of playing music.Built in high sensitivity speaker and metal composite diaphragm, it will restore true and clear sound quality, giving you enjoy an auditory feast. It uses a high-performance 5.0 low-power consumption Bluetooth chip to make the connection simple, fast and stable. The connection range is up to 10m.It is widely compatible with mainstream Bluetooth devices such as , , , , HTC, Android, ect. Specification: Item type: Bluetooth Earphone Bluetooth version: V5.0 Bluetooth distance: 32ft (10m) Battery: 180mAh (Support fast charging) Charge for 1 minute, it can use for 1.5 hours Charge for 3 minutes, it canuse for 3.5 hours Charge for 5 minutes, it canuse for 6 hours Input volatge: 5V Input current: 1A Standby time: more than 180h Music time: about 18h Call time: about 20h Protocol support: HSP/HFP/A2DP/AVRCP Microphone sensitivity: -42dB Package included: 1 x Earphone 1 x Charging Cable 1 x User Manual