Wireless Bluetooth Headset with Dual Microphone Noise Cancelling, 30 Hours Talk Time V5.3 - Hands-Free Bluetooth Earpiece for Truckers, Drivers, Office Work & Online Meetings | Perfect for Long Calls, Commuting & Remote Work

Check Battery and Main Engine/Host Interface If battery socket half-loaded into the main engine/host, there are gap between battery and main engine/host,poor contact causes power to fail, headset can't work, please insert battery into main engine/host firmly,seamless connection. Battery Charge Please charge separate lithium-ion battery only, there isn't battery in main host/engine, if you charge the main host directly will damage its sensitive component. IPX6 Water-resistant Aminy bluetooth earpiece Inner splash proof nano coating ensures the headphones won't be affected by sweat or light rain. However, we do not recommend you use the headset in pouring rain,shower bath or swimming. Touch Control Instructions Power On/Off: Hold MFB button 2s/5s Play/Pause: Touch once MFB button Next Song: Touch twice MFB button Answer/Hang up: Touch twice MFB button Reject call: Hold MFB button 2s Volume+: Long touch MFB button to get desired volume,Maximum and Minimum volume cycles Activate Siri or voice assistant: Triple-touch headset MFB button No Volume- Function,No Mute Button.