Brand : Contec Country of origin : China Warranty :1 year Colour : White Item Weight : ‎1 kg 800 g Package Dimensions :40 x 32 x 20 cm; 1.8 Kilograms Lead : Standard 12 leads Sensitivity : 2.5mm/mV 5mm/mV 10mm/mV 20mm/mV 40mm/mV Paper speed : Auto-mode: 25mm/s, 50mm/s and Manual-mode: 5mm/s, 6.25mm/s, 10mm/s, 12.5mm/s, 25mm/s, 50mm/s Power supply : AC:100/240V，50/60Hz DC:7.4V, 3700 mAh rechargeable lithium battery Size : 315mm(L) x 215mm(W) x 77mm(H