500g/0.1g high precision stain gauge sensors mini jewerly scale（https://www.chinazhengya.com/product/jewelry-scale/jwsa-500g-1g-high-precision-stain-gauge-sensors-mini-jewerly-scale.html） There is three types for you choose 100g/0.01, 200g/0.01,500g/0.1g,.The scale will automatically switched off when it is in non-use condition in order to save power.