Bluetooth vision:BC2.0 with A2DP Bluetooth Specification: BC2.1 with A2DP Bluetooth Operation distance: Max 10 meter Range of Frequency: 2.4GHz Input Voltage: DC12V ¿C 24V Weight: 700g Operation temperature: -20íµ í½ 70íµ Screen size: 7 Inch (16 : 9). Camera Specification: OV 1/3 -inch color Resolution : 628X582 Lens: 2.8mm Standard : PAL Working temperature:-10íµ--60íµ Power:9V-14V Visual angle: 170 íp Night vision distance: 0-5m Distance mark line, waterproof, shockproof