JHO-A9 TWS Wireless Hanging Ear Type Bluetooth Earphone with Charging and Storage Integrated Zipper Bag, Support Voice Control(Black) 1. It adopts dual-issue master-slave switching chip, which has wider signal coverage and more stable connection. 2. Dynamic range and noise isolation for a listening experience. 3. The left and right headphones are equipped with track and volume control buttons, allowing you to freely select and control. 4. Long battery life, no need to worry about charging, one earphone can last up to 12 hours, when using the charging box, the total playing time is longer than 30 hours. 5. If you need extra power, you can use the lightning technology to charge for 10 minutes when the battery is low, you can play for 2 hours. 6. Anti-sweat and water resistant design. 7. Adjustable anti-slip earhook for a more comfortable and stable fit. 8. Compatible and compatible with Bluetooth enabled devices. 9. The zipper bag with charging and storage is more convenient to carry and charge. Product parameters: 1. Bluetooth version: V5.0andEDR. 2. Transmission distance: 10m (in case of barrier-free). 3. Charging time: 2 hours. 4. Standby time: 100 hours. 5. Audio transmission format: HFPHSPA2DPAVRCP. 6. Input: 5V-500mA. Packing list: Instruction manual x 1 Box x 1 Charging storage box x 1 Micro USB charging cable x 1 S earbuds (pair) x 1 L earbuds (pair) x 1 Bluetooth headset (pair) x 1 Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.