[Upgraded Bluetooth 5.2] The latest Bluetooth 5.2 technology offers faster pairing capabilities, a more stable connection between your devices to Bluetooth headphones, longer battery life, and high-quality audio transmission. | [Powerful Deep Bass] Enjoy the pounding beat and immersive deep bass with TONEMAC neckband Bluetooth earbuds' 10 mm Bio-diaphragm drivers, moreover, Bluetooth 5.2 can effectively reduce the loss of sound transmission and restore all the details of your music to the greatest extent. | [20 Hours Playtime] To meet your long-term workout/running/gym/sports, TONEMAC neckband Bluetooth headphones provide 20-hour playing time on each charge, it only takes 10 min charging and can offer a 3-hour playing time with the USB-C quick charge. | [Best Equipment for Workout] *Lightweight neckband made of composite fiber and memory silicone brings all-day comfort during your hard workout. *The ergonomic earbuds are made for extreme sports and keep the most solid fit on your ear. *IPX7 nano-coating protects the neckband wireless earbuds from water and sweat damage. | [ENC for Clear Call] The ENC noise-canceling algorithm enhance voice pickup and effectively suppress 90% of the Environmental Noise, reduce the ambient noise up to 35dB, and makes your voice transfer clearly and loudly when you make a call with the Bluetooth neckband headphones.