Industrial Light Series Model GZ-371 GZ-372 GZ-373 Battery Li-ion 7.4V 4,400 mAh Li-ion 11.1V 4,400 mAh Li-ion 14.8V 5,200 mAh Brightness Eco: ~500 lmHi: ~1,000 lm Eco: ~800 lmHi: ~2,000 lm Eco: ~1,200 lmHi: ~4,000 lm Runtime Eco: 6hHi: 3h Eco: 6hHi: 3h Eco: 6hHi: 2h Charging time 4 h 4 h 4 h IP IP67 IP67 IP67 Size (mm) WxHxD 194 x 108 x 59 223 x 138 x 65 267 x 165 x 75 Weight 1,045 g 1,400 g 2,100 g Price 7,300.00 12,800.00 18,000.00 Accessories:GZ-3BR Horizontal Bar - 620.00GZ-3VS Clamp-on Vise - 1,180.00GZ-3MB Magnetic Base - 1,800.00GZ-3ST Tripod Stand - 3,000.00