Features: Made of high quality material, safe and durable to use. Bluetooth 4.0 chip set to ensure signal transmission more stable. Lower power consumption and longer standby time, transmission range up To 10 Meters. CVC6.0 noise canceling to isolate noise from outside. With microphone, support answer / reject incoming phone calls. Ultra light weight and foldable for easy carrying. Specifications: Model: H1 Color: Black/White Size: 170*148*27mm Bluetooth Version: 4.0 Frequency response:20HZ-20000HZ SNR:90-100db Distortion:1% Working voltage:3.7V Charging voltage:DC5v Speaker:16 Transmission Range:10m File format:MP3,WAV Charging time: 1-2 hours Play Time:8hours Talk Time:8hours Standby time: 300 hours Suitable For: iPhone/Samsung/HTC/XIAOMI/PC,etc. Package included: 1* Bluetooth Earphone 1* USB Charging Cable Notes: 1. Due to the difference between different monitors, the picture may not reflect the actual color of the item. We guarantee the style is the same as shown in the pictures. 2. Due to personal measurement technique is different, there may be 1-3cm error of the physical.Thank you