The latest advanced bluetooth earphones: using the bluetooth V5.1 in the latest QCC3020 chip, the connection speed is faster, the sound quality is better, and the power consumption is lower. Support stable pairing with any 2 Bluetooth devices at the same time. HD Clarity: Built-in dual microphones and cVc 8.0 noise reduction technology optimize your sound and minimize noise caused by wind, motion and background sounds. aptX HD streams your sound to the other end in HD clarity. Hands-0 calling: Easy-to-use controls let you change volume, track, mute calls and activate Siri, Google Now or Cortana with just one click. So you can finally 0 your cheeks from your phone in the car, at home, in the office or on the road. COMFORTABLE FIT: Adjustable ear loops allow you to easily switch between left and right ears. 3 ear tip sizes provide precise and comfortable fit. The lightweight design of 0.63 oz ensures that you are comfortable even for extended periods of time. LONG LIFE BATTERY: This headset can make calls, play music, videos, audiobooks, voicemails, and navigation commands for up to 18 hours, with up to 10 days of standby time on a single charge. Specification: Bluetooth version: 5.1 Talk time: up to 24 hours Music time: up to 24 hours Standby time: up to 1500 hours Charging time: about 2 hours Transmission distance: 10~35m Microphone: omnidirectional microphone Left and right ears: can be worn Speakers: Dynamic Speakers Parts List: 1 bluetooth headset 1 * USB charging 1 * User Manual 3 * Earbuds (3 Sizes)