Brand new and high quality Blue tooth version: V5.3 Material: ABS Effective straight-line distance: 10 meters Battery: Headphones 100mah Play time: 16H Standby time: 120H Full charge time: about 1 hour Color: white, black, orange Package Size: 9*6*2.5cm Features: 1.Bone Conducting TechnologyOpen ear bone conduction earbuds do not enter your ears, but transmit audio through your cheekbones. Whether you're jogging, biking or hiking, these wireless sports headphones offer the safest way to listen to music or podcasts. 2.Extra Long Standby TimeEarphones blue tooth wireless built-in 100mAh rechargeable lithium battery, lasts for 8 hours of audio at 100% volume, 8 hours of talk time, and 60 minutes of charging time. Therefore, it can stand by for a long time, 3.More Stable Call ConnectionBone conduction headphones are equipped with a Blue tooth 5.3 chip, the connection is more stable, the transmission speed is faster, and the signal is stronger. It reduces background noise so you can hear calls as clearly 4.Powerful WaterproofBone conduction earbuds use a professional-grade waterproof fully enclosed sound cavity, which is waterproof and it can prevent the infiltration of daily sweat and rain. Therefore, even if we run in rainy days, it is not easy to be damaged 5.Lightweight & Stable FitOpen ear headphones adopt an innovative ergonomic design. It uses high-quality memory silicone, which can be tightly clipped to the ear without pinching. It's great for running, exercising, and outdoor sports. Notice: 1. The real color of the item may be slightly different from the pictures shown on the website caused by many factors such as brightness of your monitor and light brightness. 2. Please allow slight manual measurement deviation for the data. Thank for your understanding. 3. 1cm=0.39''. Package Included:1x Open Ear Earbud 1x Charging cable