Feature:1. [Retractable Design]: The wireless headphones feature a retractable body that can be clipped onto your clothes or collar. When you need to use them, simply extend the earbuds into your ears. When not in use, retract the earbuds with the push of a button, relieving pressure on your ears.2. [Bluetooth 5.2]: The headphones deliver clear and crisp sound for mobile phone calls, streaming music, GPS directions, and more, support one touch photography, answering and rejecting calls, making it easy to pair with smartphones and tablets.3. [LED Battery Display]: The headphones come with a built in LED battery capacity display screen. The sensitive display accurately shows the battery capacity, allowing you to enjoy wonderful music and clear calls anytime and anywhere.4. [Long lasting Battery Life]: The wireless headphones are equipped with a 140mAh battery. With a Type C interface, they can be almost fully charged in just 20 minutes and provide up to 20 hours of working time. With a standby time of up to 150 hours, they easily meet your daily needs.5. [Comfortable Design]: The single ear retractable wireless headphones provide a clear connection and a comfortable fit, making them ideal for car drivers, business professionals, and anyone who prefers a single earpiece for convenience.Specification:Item Type: Wireless HeadphonesMaterial: PC, ABSBluetooth Version: V5.2Bluetooth Protocol: Hands Free 1.6, Headset 1.1, A2DP 1.2, AVRCP 1.5Transmission Distance: about 32.8ftCharging Interface: Type CCall Duration: 20HCharging Time: 20 MinutesBattery Type: 140mAh Lithium ion Battery (built in).Package List:1 x Wireless Headphones1 x Type C Charging Cable2 x Replacement Earplugs1 x User Manual