Bluetooth Headphones, Intelligent Noise Reduction, HIFI Stereo Sound, Comfortable And Painlessness When Sleeping On Your Side, No Ear Pressure, No Delay Product parameters： Product Name:Bluetooth earphone Product color: Black Material:ABS Package size:10x10x2.5cm/3.9x3.9x1.0in Gross weight:36.7g/0.08lbs Frequency range: 20Hz-20KHz Working range: 10M Mode of action:Neck hanging Headset talk time: about 8 hours Earphone listening time: about 8 hours Standby time: about 100hours level:IPX4 Bluetooth protocol：5.2 Product description: The new Bluetooth 5.2 is continuously stuck, the transmission signal penetration is strong, the transmission is faster and more stable, and thehigh-quality and treble sound source signal is guaranteed. Autonomous sensory meridians response Sleep headphones help you sleep peacefully,The whole machine is just 10.5g light, and the ear is just 1g lightPut on as if nothing. High-energy and large-capacity battery, listening to music for more than a day for a long, supporting continuous music playback for about 8 hours, and enjoying life in standby for 100 hours. The fine structure makes the sound accelerated the heartbeat, the HIFI configuration, the vocational stage sound tuner tunes, and the test achieves a more shocking audio-visual stereo surround sound effect. Delay-, exclusive game mode, the game has almost no delay, the control and the sound are precisely matched, the audio and video are synchronized, and you can seize the game opportunity and Pre-empt. Comfortable to wear, can not be thrown off when you are exercising, in-ear design, fits different ear shapes and does not fall off during strenuous exercise. Package Included: 1xWireless Earbuds 1xUSB Charging Line 1xSpecification