Display Type:Digital Only Dimensions: 48mm * 29mm * 21mm Supply voltage: DC3.5-15V Weight: 20 g Display:Dual 3bit – 0.28 inch LED digital Display color: red + blue Refresh rate: about 500ms / times Accuracy: ± 1% + 2 words Current consumption:About 15mA Voltmeter range : DC 0 – 99.9V (resolution 0.1V) Ammeter Range: DC 0 – 9.99A