Using HIFI high-frequency technology and 6mm moving coil speaker unit, the earphone sound is beautiful.The headset is taken out of the charging box, automatically turned on and matched, and automatically connected to the mobile phone.Made of high quality PC material, it is soft, lightweight and durable to use.The length of this product is 7.8cm, the width is 4.9cm and the height is 2.7cm.It is suitable for Android, for iOS, for Windows and other bluetooth-compatible devices.Item Name: EarphonesMaterial:ABS,MetalCharging Time: About 1 HourOperating Temperature: -10 Degree Celsius-50 Degree CelsiusBattery Capacity: 40mAhWaterproof Grade: IPX7 WaterproofImpedance: φ8MM 32Bluetooth Protocol Support: A2DP1.3/HFP1.6/HSP1.2/AVRCP1.6/D11.3Transmission Distance: About 10 MetersWorking Frequency: 2.4GHZBluetooth Version: V5.0+EDRMIC Sensitivity: -42DMusic Time: About 4 HoursTalk Time: About 4 HoursCharging Bin Input Current: 5V 1AControl Model: Smart TouchingStandby Time: 120 HoursCharging Compartment Battery Capacity: 1200mAhSize:7.8cmx4.9cmx2.7cm/3.07inx1.93inx1.06inNotes:Due to the light and screen setting difference, the item's color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Please note that the product should avoid contact with hot water.Package Includes:1 X USB Charging Cable1 X User Manual1 X Charging Box1 Pair of Earphones