American Weigh Scales, Inc.

Model: SC-501A

The SC-501A Series digital scale features battery or AC adapter operation (both included) for maximum flexibility. The large platform, high precision, and integrated overload protection make this one of the most versatile pocket scales around. You can also use the two included weighing trays as a protective case when the scale is not in use.
Features: Large stainless steel weighing platform - 4 x 4" Back-lit LCD Display 3 button operation Powered by 2 AAA batteries or AC-Adapter (both included) High Precision Loadcell 10 Year Limited Warranty

Capacity	500g / 17.64oz / 2500ct / 7716gn
Readability	0.01g /0.001oz / 0.05ct / 0.2gn
Linearity	±2d
Repeatability	±3d
Stabilization Time	3-5 seconds
Calibration Weight	200g & 400g (not included)
Display Size	0.4 x 1.2"
Scale Dimensions	5.0 x 4.1 x 0.7"
Platform Dimensions	4.0 x 4.0"
Power	2 x AAA Batteries or 5V 500mA AC-Adapter (included)
Warranty	10 Year Limited Warranty

Product Manual (.pdf)