CXK Conduction Headphones Bluetooth Earbuds Open Ear Headphones Bluetooth 5.3 Earbuds with 15H Playtime IPX6 Waterproof Wireless Earbuds Stereo Sound Wireless Earphones for Cycling

【Open-Ear Design】AS21 Open-ear headphones feature the wireless open technology, no need to put earbuds in your ears, which reduce pain or hearing damage. Plus, our Conduction Headphones come through a combination of traditional conduction headphones with upgraded technology. Using air as a medium to transmit sound waves, which can reduce shock to the ear and provide you with a comfortable wearing experience. 【Fast Charging & 15 Hours Play Time】AS21 Bluetooth headphones features a 10-minute quick charge for up to 2.5 hours battery life. Once, when you are ready to go out and find that the headphones are low on power, it can be quickly charged when you change clothes. Plus, wireless headphones can enjoy up to 15 hours of listening time after being fully charged in 1.5 hours. It can be used for a week without recharging in the middle if you listen to music 2 hours per day. Less charging, more convenient. 【Safety & Comfort】Wearing open ear bluetooth headphones, you can hear your music and surroundings at the same time, avoiding potential dangers. Featuring a memory metal frame, open-ear headphones are lightweight and comfortable to keep in place during cycling. 【Stereo Sound Quality】AS21 Conduction Headphones Bluetooth feature large 16.2mm speaker drivers for premium high-quality stereo sound and immersive. It is suitable for all music genres with soft audio, allowing you to enjoy an immersive listening experience. 【Bluetooth 5.3 & One-step Pairing】AS21 Wireless headphones with the advanced Bluetooth 5.3 technology, can greatly improve the transmission speed and provide you with a stable and low-latency listening experience. Long press the "MFB" button for 2 seconds to power on, click "AS21" on your mobile device to connect. Plus, it also enables you to connect two devices simultaneously. 【Sweatproof & Rainproof】IPX6 Waterproof Headphones can effectively fight against sweat and rain. So whether you're sweating at the gym, running, cycling, or caught in the rain, these sweatproof headphones will keep playing. (Not recommended for use while swimming or bathing.)