TWS Wireless Headphones Bluetooth Earphones Hi-Fi Stereo Sound Waterproof Headsets Rotation LED Display Sports Earbuds With Mic

Parameter:
Bluetooth headset model: TWS--203; 
Bluetooth version: V5.0; 
Transmission distance: Outdoor linear distance 15 meters; 
Battery capacity: Pure cobalt battery, earphone 30mah; 
Charging box battery capacity: 400mAh; 
Speaker: 10mm real copper ring speaker; 
Listening to music time: About 3-4 hours; 
Talk time: About 4 hours; 
Standby time: 120 hours; 
Charging time: 50 minutes; 
Working current: 5-10MA; 
Working voltage: 3.0V-4.2V; 
Distortion: <0.1%; 
S/N Ratio: >90db; 
Frequency corresponding:  20-20KHZ; 
Transmitting power:  4dbm; 
Speaker impedance: 32 ohms; 
Carrier frequency:  2.4GHZ; 
Support Bluetooth protocol: A2DP/AVRCP/HFP/HSP/SPP; 
  
Package Includes:
1 * Earphone ; 
1 * Charging compartment; 
1 * Charging cable ; 
1 * Manual