FOCUSPOWER T800 Wireless Sport Stereo In-Ear Noise Cancelling Sweatproof Bluetooth Headphones A STRONG INSIDE Focuspower T800 Wireless Bluetooth Headphones built a High-end CSR8645 Bluetooth chip form the UK which support APT-X professional audio decoding.The effective rage of the earphones exceed over 10 meters in all directions,and the point-to-point straight effective distance is as much as 50 meters.Advanced Bluetooth 4.1 version provides high-fidelity stereo music and clear speech. LIGHTER AS NOTHING T800 Bluetooth headsets weighs 15g in total and one single earphone only weighs 5g,Which is even smaller than the size of a quarter coin. It fells so light,stable and comfortable as if it were almost invisible. The cable with Military-level nylon threads which are soft,comfortable and durable. INDEPENDENT ACOUSTIC SYSTEM The custom-made 12mm composite diaphragm moving coil supports high resolution tri-frequency equilibrium offering smooth human voice and powerful base.Highlu-sensitive noise-cancelling microphone offers high calling quality and sets your hands free on matter if youre working out in the gum,driving,or having a business negotiation. NO MORE RAINDROP NO MORE CORROSIVE SWEAT T800 Bluetooth headphones has the Liquipel nano watersafe technology, effective waterproof level up to IP4.Never worried about the rain beat against corrosion and sweat. BETTER WEARING EXPERIENCE Professional design team and acoustic team were involved the entire designing process of the cavity and tone tuning.More comfortable in-ear angle,hard to fall off,and user doesnt feel tried even affer a long time of wearing.