The Bluedio brand founded in 2002, pursues even better quality with the philosophy of fashion, simple, innovation. Bluedio is a leader among global audio equipment makers and is incorporating it to provide more professional audio and wireless communication technology to global consumers. Bluedio’s mission is to encourage global consumers to experience a wonderful life. PPS 8 Research Physical Positioning Surround Sound (Physical Positioning Surround Sound) research, develop balance sound quality over the entire high, medium and low range, and dedicate omnidirectional stereo sound to users. The Bluedio UFO body adopts aluminum strength titanium alloy of a higher strength, a lower density class, the headphones become more durable, last longer, lighter, light weight and experience a sense of comfort per ear. Bluedio UFO ‘s Bluetooth resolution is as high as 24 bit @ 48 KHz. This means that the digital speed of the Bluetooth decoder with built-in UFO is increased to 2304 Kb / s in audio processing. Then you can analyze the voice more precisely and return it. Bluetooth version: Bluetooth 4.1 compatible profile: A2DP, AVRCP, HSP, HFP driver: ?50mm X 2; ?20mm x 6 Communication distance: 10 meters (no obstacles) Talk time: 28 hours Music playback time: 25 hours continuous standby Time: 1300 hours (50 days) Charging time: About 3-5 hours Bluetooth module with built-in Bluedio UFO is equipped with 3D DSP (digital signal processing / digital signal processing), enhances the sense of the spot and the sense of space, By analyzing the music extremely finely, you can enjoy the rich feeling of music festival like live to users. How to use and after-sales service 1, Pairing method: Press and hold the multifunction button until you hear “power on” and “pairing”. When the signal lamp lights up in blue, the earphone enters the pairing mode. 2, after-sales service: 18 months warranty included