Description: 1.When someone is calling you, the headset will vibrate to remind you, so you will not miss any call. 2.Hi-Fi Stereo Sound: DSP double orifice noise reduction technology, ensure Hi-Fi stereo music sound and strong signal. 3.High quality and clear voice even in noisy environment like inside a gym and running / cycling on the road. 4.Route optimization, less charging time The cable is flexible, maximum length is 12 inches Works with almost any enabled devices. 5. With high cohesion collar clip, you can keep communication freely when walking. Specification: Brand Name: Fineblue Model Number: HF-68 Version: 4.1 Support Protocol: Headset, HFP, A2DP, AVRCP Operation Range: Up to 10 meters (no obstacle) Frequency Response Range: 20Hz-20KHz Impedance: 32±15%Ω Sensitivity: 88±3dB Mic Sensitivity: -42±3dB Headset Battery: 260mAh rechargeable Li-polymer battery Music Playing Time: about 18 hours (depends on music volume) Talking Time: about 18~20 hours Standby Time: about 300 hours Charging Time: about 2 hours Charge Port: Micro USB Charging Voltage: DC 5V Color: Black with Silver Main Item Size: Approx. 6.4 * 1.7 * 1.1cm / 2.52 * 0.67 * 0.43in Main Item Weight: 13g / 0.45oz Package Size: 19.0 * 8.5 * 3.0cm / 7.48 * 3.34 * 1.18in Package Weight: 120g / 4.16oz Package Includes: 1 x earphone 1 x USB Cable 1 x Ear Hook 1 x User Manual