QUAD SLIM True Wireless Metallic Earbuds

• Metal Case
• Slim Design
• Touch Sensor
• Stereo Sound

Specification

Transmission Distance : 10m 
Sensitivity : 103dB 
Frequency Range : 20Hz-20KHz 
Support Protocol : SBC, MP2, MP3, WMA, APE, FLAC, AAC, MA4, M4A, WAV, AIF, AIFC 
Speaker : 13mm Copper ring composite membrane 
Earphone Capacity : 28mAh 
Charging Case Capacity : 280mAh 
Input : 5V  1A 
Battery Case Charging Time : 1.5hours 
Earbuds Playing Time : About 4 Hrs (70% volume) 
Playtime with a charging case : About 16Hrs 
Standby time : 155 days 
Color : Metallic Black