As described - small and compact - only operates for 2 hours off battery
The slot for the memory card is too big. I tried placing the card in the device and it fell in. I had to open the device with a mini screw driver to retrieve the memory card and try again. Video quality for indoor use is quite bad. You can still use it to recognize subjects (i.e. place it on your desk and you can tell who was in your office), but if you want details don't get this. Video was very grainy even with ample lighting in the room. I got what paid for so I won't ask for a return. I wasn't expecting much from ten bucks, but was kind of hoping I'd still get decent quality out of a "1080P" device. The shipment was quite fast for Aliexpress. Kudos for the seller for that.