Magnetic Lock-shaped Anti-theft Camera Via GSM network Function: Composed with two magnetic blocks, once detached or sound-activated, automatically dial or send messaging to preset mobile numbers to alarm. Two-way surveillance, sound-control automatic dial-up to preset mobile numbers, transmitting via built-in GSM Sim. Could be also reached by preset GSM mobile numbers to monitor simultaneously. Disguised as a Magnetic Lock, placed on doors for offices, residence and cars, easily neglected by thieves or unexpcted visitors. Application: Distance Voice detecting and monitoring via GSM mobile network Sound-activated Support battery content checking via mobile messaging Measurement: 63X41X15mm Net Weight: 35G Mobile Frequency: 900/1800mhz or 850/1900mhz Receiver: Preset mobile phone with corresponding SIM. Operating Time: 5-7 hours Standby time: 72-75 Hours Power Source: Inlaid rechargeable 90mA lithium battery. Accessories; One AC adaptor, one USB cable, User's manual.