i got the cheapo Lumos projector, the lumen not very high also... projected on grey painted wall, night time watch is ok or in dark room.    but if u buy those projector silver screen, think watch in day time also can one

install for the convenience, if wanna hack jiu hack loh, just leemember to recharge battery.   actually physical lock most can be pick open also,  like within a few sec...    whoever want to really wan to break in can also brute force break in any door one      

@Cybertan

I dont support hakka crap 

hoot this. finally after 2 yr got promo liao @ $144   Philips X2HR/00 Fidelio Over-Ear Open-Air Headphone, Black : Amazon.sg: Electronics