Lightweight Mini Wireless Bluetooth Earphone With 2 In 1 Portable Charging Storage Box In Ear Noise Reduction Invisible HeadsetFeature:13MM ultra-small body, like a little fababean, 3.9g to wear such as nothing, and not flashing during wear, others can not detect the basic, more suitable for invisible use.120 ° Into ear, with perspective of ear canal, and the design of small double-cap after the ear, deep into the ear canal, and not pressure ear canal, also isolated from noise.5.8MM speaker unit Mini speaker than the 6MM unit, bass stronger, more open sound field, such as the Pro concert site.Bluetooth Version: V4.2Support: HSP/HFP/A2DP/AVRCPWork time: 10 hoursStand-by time: 5 daysCharging time: 1-2 hoursThe distance between the headset and mobile phone can not be greater than 10M.Support function:1. Can receive from mobile phones, laptops and other Bluetooth devices, audio, and PC Bluetooth DONGLE paired connection, you can play a variety of audio files.2. Reset function: non-connected standby, double-click the MFB button, clear all the pairing information, headset off.3. Low-voltage alarm, low-voltage shutdown, the base discharge, the base off.4. Answer the second call and hold the first call.5. Music player / pause, phone answer / hang up, IOS power display, smart one two, smart voice prompts, the last number of redial.Headphone weight: 4gInvisible headphones size: 1.9 * 1.3 * 1.2cmCharging warehouse size: 5.5 * 4.7 * 2cmHow to use:Long by headphones main buttons, until the headphones red and blue lights flashing at the same time and then loosen the button, Turn the phone's Bluetooth function on and search for this bluetooth headset for the name(BL-01). Click on the pairing and wait for the pairing to complete.Package Include:1X Bluetooth Earphone1X User Manual1X Micro usb Charging Cable1X Charging box1X Medium earmuffs1X Large earmuffs