... 2-way GSM Audio Device,Audio Device,GSM audio listening device,GSM SIM audio device,This product is using ... either CDMA or 3G network!Flashlight:Regardless of the boot or shut down in the state, touch the ... cover, insert the SIM card holder automatically boot, boot-up indicator light 5-8 seconds until the ... you want to check it’s surrounding, the device will not automatically back out.can only answer ...