Specifications:The wireless earphone has 5.0 binaural chip, which has fast and stable connection.With bass effect, HiFi high-frequency technology and 10mm dynamic speaker unit, it brings you excellent listening experience.It has equipped with CVC8.0 built-in active noise reduction IC.It supports high definition call, playback pause, answer call, call voice assistant, volume adjustment, automatic pairing, intelligent noise reduction, etc.The wireless earphone supports smart touch, which is convenient to use.Item Name: Wireless EarphoneMaterial: ABSBluetooth Version: 5.0Type: F9-5Supported Protocols: HFP 1.7, HSP 1.2, A2DP 1, AVRCP1.6, SPP 1.2 and PBAP 1.0Charging Voltage: DC 5VMicrophone Sensitivity: -42dBWorking Temperature: -10-50 Degree CelsiusFrequency Response Range: 20-20000HzSensitivity: 120dB +/- 5dBTransmission Distance: 10mCharging Time: about 1 HourCumulative Battery Life: about 220 HoursHeadphone Battery Capacity: 50mAh (Included)Charging Box Battery Capacity: 2000mAh (Included)Features: Wireless, Rechargeable, Smart TouchCharging Box Size: 14cm x 10cm x 4cm/5.51" x 3.94" x 1.57" (Approx.)Notes:Due to the light and screen setting difference, the item& 39;s color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:2 x Wireless Earphones6 x Ear Caps1 x Charging Box1 x Charging Cable1 x User Manual