【Ultra-long Playtime & LED Power Indicator】 H02 wireless headphones can get 5.5H playtime per charge. Recharge 10-12 times by charging case can last up 60H playtime; You'll have enough power for enjoying in sport, travelling; Wireless earphones has battery LED display. Can easily read the performance of the charging box and earbuds without worrying about the power failure. 【True Wireless & Synchronizes】H02 Bluetooth 5.0 Headphones adopts with the most advanced Bluetooth 5.0 technology, stable and sensitive, enhances the connection stability of binaural calls, reduces the signal transmission delay, effectively reduces the "time difference" between audio and video, the truly synchronizes. The range is up to 50ft away. 【Hi-Fi Stereo Sound & Noise Reduction】H02 bluetooth earphones has the unique stereo sound quality and design, High clarity and deep bass immerse you into the perfect sound; Combines the latest CVC 8.0 Noise Cancellation technology, bluetooth earbuds get rid of environment noises like traffic, industrial during phone calls, so that you can have clearer and more stable calls. Dual Mics also ensure the best possible call quality. 【Ergonomic Design & Single/Twin Mode】With Ultra-light weight less than 5g and ergonomic redesign, H02 wireless earphones can fit your ears perfectly. No stressful when you put them into your ears, no pain even if long time using; Each earphones can work independently or together, you can switch single/twin model as you like. 【IPX8 Waterproof 】 Certificated with IPX8 waterproof, H02 bluetooth earbuds is strong enough to resist all the penetration from splash and water. Zero worry for all-kinds of outdoor activity sports. We offer 90-day refund without giving a reason and 18-month replacement. Please feel free to contact us if you have problem or need any help.