Rulefiss Wireless Earbuds, 75H Bluetooth 5.4 Headphones Sports with 4 ENC Mic, HD Stereo Noise Cancelling Ear Buds, Running Earphones with Earhooks, LED Display, IP7 Waterproof Headset for Gym Workout

• 【Flexible Sports Earhooks, Comfort-Fit】Unlike most Bluetooth headphones, BX27 sports earbuds are designed with use soft silica gel over-ear earhooks, while the end of the earhook has a non-slip design, even if it does not fall off even during strenuous exercise. And a single earbud is as light as 4.3g, equipped with 3 different sizes of high-quality silicone earplugs (S/M/L). And this running headphones wireless make an ideal companion while jogging, gym, workout, yoga and more sports
• 【New Bluetooth 5.4 Technology, Fast Pairing】Wireless earbuds are equipped with the new Bluetooth 5.4, which fully optimizes Bluetooth transmission and connection defects. Compared with Bluetooth 5.3, the data transmission rate of Bluetooth 5.4 is +20%, the connection stability is +50%, the power consumption is reduced by 30%. After pairing the devices for the first time, the wireless headphones will automatically connect when you take them out of the charging case
• 【75H Ultra Long Playtime, Dual LED Display】Bluetooth earbuds provide up to 15 hours continuous using time on a single charge, portable charging case can charge the ear buds for 5-6 times, giving 75 hours of a total playtime. Charging case presents its battery from 1%-100%, and the charging status of earphones by up and down of LED bar. Once the wireless earphones put in the charge case, it can be charged automatically. Never worry about battery life even on long trips
• 【Immersive Stereo Sound, Crystal Clear Calls】The noise cancelling earbuds have a built-in 14.2mm dynamic driver AAC/SBC audio decoder with a separate sound chamber design that delivers powerful HiFi Stereo and a dynamic listening experience to power your workout. At the same time, the Bluetooth earphones have built-in 4 clear microphones and CVC 8.0 noise reduction technology, which enhance vocal clarity by 75% and reduce external noise by 60%, making the call clearer