Features: Large screen backlight LCD display Built-in rechargeable spare battery Built-in RS232 interface Function: Unit conversion Main technical parameters: Model: MP60K - 1 Weight range (kg) : 60 Readability (g) : 1 Repeatability (less than or equal to g) : + / - 1 Linear (or less than or equal to g) : + / - 2 Scale size (mm) : 420 by 520 Power source: both direct and direct Calibration method: external calibration External dimension: 412*670*1010(mm)