Sport Business Headphone Intelligent Noise Cancellation-long Life Hanging Ear Wireless Bluetooth Headset Specification: Product Name: Wireless Earbud Product color: Black Material:ABS Product size:6.3x5.2x1.1cm/2.48x2.05x0.43inch Package size:12x8.5x2.5cm/4.72x3.35x0.98inch Gross weight:40g/0.09lbs Bluetooth standard: V5.0 Headset sound quality: high-definition sound Transmission distance: about 15 meters -20 meters Battery capacity: 250mAh Charging time: 2 hours Charging power: 3.7v/500mAh regulated power supply Music time: 28 hours Talking time: 48 hours Features: Ergonomic structure, body can be tightly attached to the ear, so that the ear is more evenly stressed. Bluetooth 5.0 low power consumption chip, more stable and faster transmission, low latency 180 degree rotating earpiece, left and right ears can be converted for your use Intelligent noise reduction HD calls Match all devices that support Bluetooth function, cell phones, tablets, etc. are suitable for use Comfortable earbuds, easy to wear The body of the fireproof plastic, rubber oil, delicate , a multi-functional button experience more convenient Long press multi-function key to on and off, press to play or pause music, double press to call back, three presses is change the song, press to call or hang up the phone, language can be switched power on Package Include: 1x Bluetooth Earbud 1x USB charging line 1x Specification