Comfortable silicone in ears Lightweight compact design

1.BT/CHIP: V5.3/JL6983D4/D2  
2. Distance: 10M     
3. Battery capacity: Charging case  200Ah with protection board, earbuds 30mAh*2
4. Playing time: 4-5H,  c Charging times: 2 times, charging case: 1.5H，charging time for earbuds: 1H，standby: 100H 
5.Driver:φ13mm impedance: 32 Ω, 5V, frequency: 20hz-20Khz, SPK sensitivity: 96±3db     
6. Product size: 50.80mm*23.50*48mm， weight: 25.5g      
7. The earphone without Li-ion IC protection board