Precision machining,professional driving unit,less shock stereo Soft material to protect ears, more comfortable for phone call and music Comfortable to wear,Ergonomic wear design,In line with the ear contour curve,comfortable fit Compatible with most mainstream digital devices, tablet/computer/mobile phone and other digital equipment. Great for gym, running, jogging, hiking, cycling, and impact sports. range in the quality to be able to reproduced. Selects the high sensitivity of 10mm titanium diaphragm as sound unit.The high clear, rhythmic, strong heavy bass. One simple Home key to complete a variety of functions, including on/off, answering calls, music playback, etc. S650 Mini Wireless Earbud Stereo Headset Description Specifications: Item Type: Bluetooth Headset Style: In-Ear Material: Aluminum Alloy TPE Color: Gold/Black (Optional) Bluetooth Version: V4.1 Operating range: Up to 10m/33 feet (Free Space) Bluetooth profiles: HFP/A2DP/HSP/AVRCP Frequency Response: 20Hz-22kHz Frequency range: 2.4GHZ-2.480GHZ Sensitivity: 90dB3dB Talk time: about 5 hours Music Play Time: about 4 hours Standby time: about 150 hours Charge connector: Micro USB charging Charging Time: about 1.5 hours Quantity: 1 Side (other accessories demo in the picture is not included) Note: 1.Transition: 1cm=10mm=0.39inch 2.Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. 3.Due to the difference between different monitors, the picture may not reflect the actual color of the item.