Features: brand new and high quality Hearing Protection: The innovative bone conduction technology transmit sound through the ear canal. It can transmit sound through the cheekbones to protect your hearing. During the wearing process, your ears will maintain the perception of environmental sounds. 16GB of memory: This compact wireless headset has a built-in 160mAh battery and 16GB memory card, allowing you to enjoy music any for time, anywhere, and dual noise-cancelling microphones to make your calls clearer.The built-in 16GB memory card can store about 3000 songs, get rid of the phone and let the music accompany you. Lightweight and IP68 waterproof: The IP68 waterproof rating design is very suitable for wearing while swimming. Fast pairing and connection: The latest bluetooth-compatible 5.0 technology can pair your device stably and quickly, and ensure a stable connection with your mobile phone/tablet/computer and other Bluetooth-enabled devices, with more stable connectivity. Specifications: Bluetooth-compatible Version: V5.0 Audio Formats: WAV, MP3 Memory Capacity: 16GB Battery: 3.7V 160mAH Playing Music Time: About 5Hours Talking Time: About 4Hours Charging Time: About 1.5 Hours Operating Range: About 33 feet without Barrier (10 Meters without Barrier) Material: ABS Option Color:Blue,Gray,Orange Package Includes: 1x Bluetooth-compatible Earphone 1x Charging Cable note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.