Our sports earphones weigh 5 grams and are made of high-quality soft silicon material. They are lightweight, stable, and easy to operate. The special design helps them achieve truly painless and harmless use, as headphones do not need to be connected to the ear canal. The Bluetooth sports earphones feature ergonomic surround and sunken aerodynamic design, which won't easily fall off when running, dancing, or wearing glasses. Open design headphones will not enter the ears. Bone conduction Bluetooth earphones provide first-class sound through the cheekbones. Unlike hearing aids used on the ear, their wireless operation allows you to use them in most situations. It can prevent some dangerous situations from happening, because when you listen to music with it, you can also hear the sounds around you. Long service life, excellent audio quality for USB charged bone power headphones, equipped with a 2200mA charging box, allowing you to enjoy 120 hours of music or podcasts, greatly reducing natural sound leakage and providing you with excellent audio quality. The built-in microphone makes calls clearer. The wireless headphones are equipped with Bluetooth 5.2 chips to achieve more stable connections, faster transmission speeds, and stronger signals. Two microphones with environmental noise reduction technology work together to monitor the surrounding sound and immediately generate opposite signals to reduce background noise, so that you can hear a clear phone call, just like you are communicating face-to-face with others. Make hands-free calls anytime and anywhere during the practice period Touch, Wide Compatibility Wireless headphones are designed with touch and can freely change songs, answer/reject calls, adjust volume and Siri; True wireless headphones are compatible with all Bluetooth compatible devices, such as iPhone, Samsung, Android headphones, tablets, iPad Pro headphones, etc. It also features a design of anti sweat exercise headphones, making it perfect for sports, gyms, exercise, driving, and travel. Material: ABS Bluetooth: 5.2. Transmission distance: approximately 10 meters/32.81 feet Music duration: 120 hours. Talk time: 150 hours. Charging time: 1-2 hours. Charging box: 2200mAh (built-in). Frequency response: 20Hz-2000Hz. Waterproof: IPX5. Size: approximately 7.8x4x5.2 cm/3.07x1.57x2.05 inches. The integrated charging box displays the remaining power of the charging box and left and right hearing aids in real-time. Product includes: 1 pair of headphones (1 charging cable, 1 user manual) Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.