Feature:1. Lossless HIFI Original Sound: This neckband wireless BT headset adopts deep noise reduction technology, which can highly restore the original sound of music, with low distortion and full tone, allowing you to enjoy pure HiFi sound quality.2. Biological Diaphragm: The sound quality is greatly improved, it can capture every sound fluctuation, high resolution and low noise, and the sound details are richer.3. Comfortable and Stable Wearing Experience: It fits firmly into the ear without loosening or falling off, comfortable to wear, and painless for long-term wear.4. Lightweight and Comfortable: The whole machine is only 16g, without any burden, as if nothing, experience the joy from the ear to the soul.5. High-speed BT 5.1: Adopt high-speed BT 5.1 technology, stable transmission, low latency.6. Large Capacity Battery, Long Endurance: Built-in super large capacity battery case, continuous play for 12 hours of music.Specification:Specification:Color: GreenBT version: 5.1Transmission Distance: 10m (without obstacles)BatteryCapacity: 150mAhCharging Voltage: 5VContinuous playback time: 13~15hCharging Time: about 90minFrequency: 2.4GHZ-2.480GHzReceiving Sensitivity: -93dbM.Package List:1* Neckband Earbuds1* Charging cable