1. Size: 17x10.8x3.2cm 2. Bluetooth version: version 5.1 3. Bluetooth distance: 10 meters 4. Talk time: about 25 hours 5. Listening time: about 18 hours 6. Product function: Bluetooth can be converted to memory card to listen to songs. Press the + button twice to switch the memory cartoon song 7. Accessories: Equipped with two pairs of ear caps, manual, charging cable. (Without a memory card, the memory card needs to be purchased by yourself)
