QA Unable to bootIt may be because the battery is too low Please charge it for 2 3 hours before starting up There is no soundPlease check that the volume is too low and that the channel switch is pulled to the correct position The trumpet aftersoundsIf the speaker is too close to the MIC it will cause aftersounds Please set the MIC to the correct position of the distance MIC Disconnect from your phoneMake sure the battery is low and the distance between the phone and the phone is within 10 meters Or whether there is a dry shielding obstacles in the middle Unable to pair with cell phoneFirst remove all pairing information according to the instructions in the manual Put the smell of the hand and the phone within 1M and then match them again CrashDue to high intensity radiation interference such as near the high power TV transmitter tower GSM base station or airport radar may cause the crash please reset after leaving the interference source The working indicator light is abnormalA If the battery is too low due to too long idle time or excessive use it needs to be pre charged for one hour and then recharged to make the indicator light show normallyB Try changing a charging cable or charger In essence The product is a bluetooth headset with a 3 proof appearance It can be paired with POC so there is no need for wired microphone and the wired one will be wound which is not convenient Model NoUNIWA BM001WeightAbout 124gOperation ModeHandheldSOS ButtonYesP