The meter include function USB cable and software Features * This Window Tint Meter is a hand held device that measures the amount of light that passes through a window. * Technology is designed in accordance with GB 2410-80, ASTM D1033-61, JIS k7105-81 and other standards. * Digital display, wide measurement range, high resolution. * Solid structure, small volume, light weight, exquisite, easy to carry. * Single / Continuous measuring mode. * Use USB/RS-232 data output to connect with PC. * Provide Bluetooth data output choice. Specification Display : LCD Range : 0~100% Resolution : 0.1 Accuracy: ±2% Sample Thickness: <18 mm/0.7 inch Light Source : LED Measuring Mode : Single / Continuous Operating Conditions : Temperature:0~50ºC Humidity:,90% Power Supply: Main Unit :4x1.5V AAA(UM-4)Battery (Not Including Batteries) Light Emitter :2x1.5V AAA(UM-4)Battery (Not Including Batteries) Size : Main Unit :141x65x38mm Light Emitter: 70x62x52mm Weight :290g (Not Including Batteries) Standard Accessories : Main Unit Light Emitter Standard Block Carrying Case Operation ManualUSB cable with Software