HAMY 2.4GHz 4-CH Rechargeable Mini CMOS Wireless Surveillance Security Camera - NTSC (100~240V AC)
Manufacturer's product description: - Model: C-200 Mini CMOS - 2.4GHz 4 channel wireless camera with Built-in battery - NTSC system - Pickup:1/3" CMOS - Works up to 4 hours per charge - Frequency:ISM 2400MHz ~ 2483MHz - CH1=2414MHz - CH2=2432MHz - CH3=2450MHz - CH4=2468MHz - View Angle: 62 Degrees - Built-in microphone (transmits audio) - AC-DC Charger/Adapter: 100V~240V AC - Built-in 500mAh rechargeable lithium ion battery - Stand/mount included