「Bluetooth 5.0 & Easy Pairing」- Superior to bluetooth 4.0, we adopt advanced bluetooth 5.0 that insure 2X faster transmission speed, only 3s auto pairing time, non-stop 50 ft connection with iPhone/Android/iPad/Mac/laptop. | After first pairing setting, the earbuds will connect with your devices as soon as you take them out and open Bluetooth. | 「3D Stereo Sound into Music World」- Don’t miss any detail about your love song. The 14mm dynamic speakers bring you experience higher-quality 3D stereo sound at your listening time with deep bass and crystal crisp treble. Just immerse in your wonderful music world. | 「Total 24 Hours Playtime & Fast Charging」- Each headphone can work 4 hours per use. Put them back to the portable charging case which configured 650mAh battery to be recharged 5 times automatically, they can provide extra 20 hours of playtime. Our earbuds even support fast charging: Charged for 30 min, use 2 hours. | 「Monaural/Binaural Mode with Noise Canceling」- With built-in mics and dynamic speakers on both earbuds, you can wear one earphone or a pair to make hand-free calls or listen music with a good stereo effect. To protect your ears from sound damage, the headsets remove external noise intelligently and adjust noise reduction level automatically with CVC 8.0 noise cancellation technology. | 「IPX5 Waterproof & 2-Year Quality Guarantee」- With elaborate design, headsets case ensure IPX5 water-resistance that prevent water ingress easily. Go with these earphones and enjoy sweat at the gym or baptism in the rain. We provide 2 year quality guarantee service for free replacement, 60 day refund guarantee and 24hours online response to your inquiry.