HIGH ACCURACY & LESS ERRORSMax capacity of digital usb gram scale : 500g/1000g , accuracy is 0.1g. 7 DIFFERENT MEASUREMENT UNITSThe mini food scale includes most necessary measuring units which converts the unit among gram / oz / gn / ct / tl /dwt / ozt in seconds by pressing the button"UNIT". 2 KINDS OF POWER SOURCES and ENERGY SAVINGUSB cable and 2 x AAA batteries separately (batteries are not included).To reduce the environmental pollution and save the life of batteries,we suggest that you don't need to install the batteries when you have any power source like a socket,laptop ,computer or portable power bank.30 seconds power off automatically to save energy.Please note that there is no built-in batteries inside the scale,so it cannot be charged with the USB. EXCELLENT QUALITY MATERIALS and EASY TO USEThe digital kitchen scale designed with a stainless steel,brushed metal surface and an anti-dust lid which can be used as a tray on the scale to weight larger-sized objects. There is also a protective case to avoid any damages. Large LCD display with back-light for easy reading even in gloomy conditions.You can use the TARE function to zero the weight on the tray,the COUNT function to count for larger quantity. VERSATILE and MINI SIZEDThe scales gram is in pocket size which can be taken anywhere and can weigh numerous objects like food, gemstones, coins, jewelry, gold,seasoning,coffee etc.