Unobstructed effective range: 50m indoors, 260m outdoors, Two-way talk function, Room temperature monitoring, Built-in 8 lullabies in the camera, Automatic night vision mode, VOX function, Long battery life (up to 20 hours in VOX mode), Power supply cable length: 250 cm, 2 power supplies, Multi-language support. MONITOR: LCD screen size: 2.4", Resolution: 320 x 240, Battery: Lithium polymer 750mAh, Power supply: 5V/1000mA DC, Power consumption: 200mA, Dimensions: 59 x 112 x 17 mm, Net weight: 0.083 kg. CAMERA: Image sensor: CMOS, Resolution: 640 x 480, Night visibility range: ≤5M, Power supply: 5V/1000mA DC, Power consumption: 200mA, Dimensions: 67 x 105 x 67 mm, Net weight: 0.063 kg