Put a SIM card in the device,just phone it then you could hear the surrounding.
1: Microphone range: about 20 Meters (diameter)
2: Stand-by time: 3-5 days (using voice control function)
3: 6-15 days ( dont use voice control function)
4: 30-40 hours (flashlight available)
5: call back option
This Product is Available in Every Where in Pakistan With Free Home Delivery and Cash On Delivery.
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Mention AdsPakistan when calling seller to get a good deal