Rating voltage: 230 V AC, 50 Hz Power measure range: 16 A, 3680 W Energy display: 0 - 9999 days, 0 - 9999 W, 0 - 999.9 V, 0 - 16A, 0 - 99.99 cost unit/KWh, 0 - 9999 KWh, 0 - 9999 cost units Built-in battery: rechargeable 3.6 VDC Ni-MH, 20 mAh Dimensions: 72 x 76 x 158 mm Net weight: 0.24 kg