Demeras Ear Hook Bluetooth Headphones Single Ear Bluetooth Headset with Mic Bluetooth Two Way Earpiece for Cell Phone(Black)(Black) Ear-hook design: non-ear-in type, does not damage the eardrum, can play music and make phone calls clearly; Multi-function: Bluetooth headset has multi-function buttons, support power on and off, Bluetooth connection, answering calls, hanging up, one-key redial, music adjustment; Noise reduction: Bluetooth headsets that support active noise reduction can help isolate external noise and reduce environmental noise; Invisible and compact design: small weight and easy to carry; Long battery life: Just 1.5 hours of fast charging, you can seamlessly enjoy 4 hours of music/talk time and 160 hours of standby time. Ear-hook design, not in-ear, free from eardrum damage. Instead of bone conduction headphones, you do not need to put the headset into ear, it can clearly play music and make phone calls and harmless to your ear,suitable for all kinds of people Bluetooth earphone has multifunctional button,support power on&off, bluetooth connection, answer calls, hang up, one key redial, music adjustment.Bluetooth wireless headset support caller number voice prompt. New energy-saving technology, reduced standby power consumption, long-lasting battery life.Allows seamless enjoyment of 4 hours music/talking time and 160 hours stand-by time with a quick charging of only 1.5 hours. Read more Standby time about 160 hours Call / play time about 4 hours Charging time about 1.5 hours Bluetooth frequency band 2.4GHz transmission distance about 10 meters Battery capacity 75mAh Weight Approx 18.9g/0.7oz Supporting protocols A2DP1.3/HFP1.6/hsp1.2/avrcp1.6/d11.3 Dimensions Approx 8.5 * 5.5 * 0.7cm/3.3 * 2.2 * 0.3inch (L * W * H) Package list: 1 * Bluetooth Earphone 1 * User Manual 1 * Data Line Read more