Features 1、BONE CONDUCTION: Open ear headphone delivers premium sound through the cheekbones, which ensures that your ears remain completely open to ambient sound for safer traveling, clean and hygienic to wear. 2、STEREO SOUND: The Bluetooth bone conduction headphone has large 14.2mm speaker drivers for premium stereo sound and immersive feel. Suitable for all music genres with soft sound. 3、WIDE COMPATIBILITY: Featuring Bluetooth 5.3 technology for more stable transmission without delay. Has built in microphone for hands free calling. Compatible with for iOS, for Android, tablet, for Macbook, laptop and more. 4、STABLE WEARING: This wireless headset is ergonomically designed to provide a comfortable and stable wearing, no matter running, jumping or other large movements, the headset remains stable. 5、WATERPROOF AND DURABLE: With IPX7 waterproof and sweatproof rating, it can resist sweat, dust and more. The sturdy frame and premium materials ensure that it can withstand running, biking, hiking and other sports. Specification Item Type: Bone Conduction Headphone Material: ABS Built in Battery: Lithium Battery 75mah Sensitivity: -42dB SNR: 59dB Frequency Response Range: 20HZ-20KHZ Directivity: Omnidirectional Rated Power: 3W Maximum Power: 5W Charging Time Limit: About 1.5 Hours Music Playback Time: About 10 Hours Standby Time: About 130 Hours (Connected, No Breathing Light On) Standby Time (Connected, with Breathing Light On): 12 Hours Transmission Distance: Approx. 10m/32.8ft Package List 1 x Bone Conduction Headphone 1 x Charging Cable 1 x Instruction Manual