Wireless Headphones Bluetooth Headset Noise Cancelling Over Ear With Microphone Specifications: Model:TR905 Bluetooth version: V4.0+EDR Bluetooth operating range : up to 10m (free space) Transmission frequency range: 2.4GHz-2.48GHz Supported profiles: A2DP, AVRCP, HSP, HFP Frequency response: 20Hz-20KHz Standby time: up to 100 hours Bluetooth music/call time: up to 5 hours Fully charged time: about 1-2 hours Operating environment: -10 to 50℃ Charging voltage/current: 5V Battery Capacility: 230mAH Feature: 1.Wear comfortable and secure. This headset earpad is equiped with soft materials over the ear, feel lightweight and contribute to your ear protection, the headset is designed with ABS materials and very not to wear out easily. 2.Clear conversation and noise reduction Due to completely covered by the earpad, no outside noise could enter into your ear, nor sound loss. Your ear is full of the immersive song/ incoming call when heard/ be heard, not disturb and could enjoy your songs/call all days. 3.Fold and design Redesigned to adjust headset angle to fit your headband size, and foldable to take out any where you want, very convenient to go out travel, exersices, hiking, joging, yoging etc. 4.Universal devices compatible have bluetooth enabled devices, this headset could your PC, smart phone, tablet, speakers. with advanced chip update, no sound loss when connect successfully, feel the sound stream over your ears. 5.Ultimate Music Support voice. Answer/ hang-up calls through one-touch button. Double-click the button to another son. insert your card as alternatively, or connect your PC by the packed cable to enjoy your, battery capacity also show in your smart phone to remind you. Package include: 1x Bluetooth Headphone 1x USB charging cable 1x User manual