Specifications:
 Brand: LarKoo
 Model: HV-316T
 Color: Black
 Bluetooth version: V4.1
 Working Voltage: 3.2V - 4.2V
 Sensitivity: -42dB±2dB
 Frequency Range: 2.4-2.48Ghz
 Talk/Listening time: Up to 120 minutes listen or talk
 Standby time: Up to 8 days
 Auto Power-Off technology: Power off when no connectivity for 5 minutes.
 Operating distance(range): Up to 10m/33 feet
 Headphones weight: 5 grams per earbud
 Noise reduction: Full duplex echo cancellation; Real time noise reduction; Voice clarity
 Moisture protection: Design for sweat and moisture protection
 Charge connector: Micro USB charging
 Battery type: Rechargeable, non-replaceable lithium-ion polymer
 Bluetooth 4.1 + EDR: Advanced Audio Distribution Profile (A2DP), Audio Video Remote Control Profile (AVRCP), Hands-free Profile (HFP) and Headset Profile (HSP)

Package included:
 2 x LarKoo Bluetooth Stereo Earpbuds
 4 x Earcaps
 1 x Charging Station
 1 x Micro USB charge cable
 1 x User Manual

Note:
 When charging, red light is on; When finished charging, light off; When headset is put in the charging case, hedset will be powerd off automatically; When several minutes after the low battery alert, headset will be powerd off.
 More instructions in the User Manual