Specification: Style: Ear Hook Communication: Wireless Vocalism Principle: Bone Conduction Control Button: Yes Volume Control: Yes Function: For Study,Sport Material: Plastic Product model: K69 Color: Black Bluetooth-Compatible solution: Bluetooth-Compatible V5.0 Standby time: 60 days+ Charging time: approximately 1 hour Communication distance: accessible 10-15 meters Headphone battery capacity: 180 mA (with IC protection board) Bare weight: 20g Complete weight: 52g Color box size: about 165 * 105 * 18mm/6.49 * 4.13 * 0.70inch Note: Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! Please allow 1-2cm measuring deviation due to manual measurement. Included: 1 x Earphones 1 x Charging cable 1 x Instruction manual 1. Comfortable Wear: Unlike traditional wireless earphones, bone conduction earphones are placed in front of your ears, offering a free and comfortable experience. The lightweight design of only 20g makes it almost unnoticeable even during intense workouts. 2. Open-Ear Safety: Whether you're jogging, cycling, sprinting, or hiking, these wireless headphones provide the safest way to listen to music or podcasts. 3. 180mAh Battery and Bluetooth-Compatible: With just one hour of charging, you can enjoy up to 13 hours of continuous music playback. Fast and stable connection with Bluetooth-Compatible V5.0 technology ensure a seamless audio experience. 4. High-Quality Sound: Equipped with excellent sound quality, bone conduction earphones offer balanced recording and a perfect audio experience when working out.