T21 IPX7 Waterproof TWS Bluetooth Earphone

• Material:ABS+Resin Technology
• Noise isolation:Passive;Call:CVC function
• Driver Size:10mm
• Input Impedance:16Ω
• Sound Pressure level:117dB±2
• Frequency Range:20Hz to 20KHz
• Max Distortion:≤3%
• Bluetooth Version:Bluetooth V5.1
• Bluetooth Profile:AVRCP,A2DP,HSP,HFP
• Audio Technology:aptx,AAC,SBC
• Operation Range:10m,Class 2 
• Waterproff Level:IPX7
• Microphone:MEMS,Omni directional,-38dB±1dB
• Controls:Touch control for Answer,Track
   selection,Siri activation
• Battery:Erphone:40mAh*2+Case 380mAh,Lithium polymer type
• Battery Life:6hrs+36hrs in the case
• Charging interface:Type C
• Charging time:1±0.5hours
• Dimension Earphone:38*17.1*17.7mm
  /Case:53*48*23mm
• Weight:Earphone 5.5g*2+ Case 44g