Features: Brand new and high quality. Bluetooth 4.1+EDR, more stable signal and more strengthen data transmission. Stylish, Elegant and Ergonomic design. Adopt the Advanced CVC 6.0 Intelligent Noise Reduction. Built-in High Sensitivity Microphone, provide clear and loud sound. Built-in 60mAh Rechargeable Polymer Battery. Allow you to conveniently answer calls for safe driving or exercising, etc. Smart one match two, can connect two devices simultaneously. Description: Product Number: i7 Bluetooth Version: V4.1+EDR Battery: 60mAh Wearing style: In-ear Color: Gold, Rose gold, Red, Black, White Standby time: 120 hours Working time: 4-5 hours Charging time: 1 hour Charging voltage: DC 5V Agreements: A2DP1.3/HFP1.6/HSP1.2/AVRCP1.6/D11.3 Resistance: 32 Noise Reduction: CVC6.0 Radio frequency: 2.402-2.480GHz Effective Range: 10m Package Included: 1pc x i7 Mini Bluetooth Headset 1pc x USB Cable 1pc x User Manual NO Retail Box. Packed Safely in Bubble Bag.