Description: Product Type: Neck-mounted Bluetooth headset Connection distance:> 10 meters Playing time: about 100 hours Talk time: about 100 hours Connection type: wireless bluetooth Bluetooth protocol: A2DP/HFP/HSP/AVRCP Frequency: 2400-2483. 5MHz Battery type: polymer lithium battery Battery specification: 3.7v1000mAh Charging time: about 3 hours Speaker impedance: 32 Standby time: 1000 hours Charging mode: Type-C charging interface Specifications: 1. Charge for 3 hours and listen to songs for 100 hours. 2. 100 hours of long battery life, 1000 mAh battery capacity, turn a long journey into an audio-visual journey. 3. The 15-meter transmission does not drop, and the Bluetooth 5.1 upgrade version. The newly upgraded 5.1 chip brings more than just the reduction of the picture synchronization delay, while strengthening the signal connection, which can maintain the stability of the music even in the bumpy pace. 4. The three-dimensional soft halter neck is made of skin-friendly material, flexible and lightweight, and the collar has a memory rebound characteristic, which can be restored to its original shape even with a large pull, and it is durable. 5. Magnetic suction type automatic adsorption. If you dont listen to music, you can automatically absorb the two sound chambers by merging them, and place the winding to prevent slipping. Package Included: 1*earphone, 1*charging cable, 6*ear cap, 1*instruction