Material: Die-casting aluminium + Plastic body, PC cover
LED chip: SMD2835
Watt: 20W / 30W / 50W 
20W: with 3.7V / 6700mAh Li-battery
30W: with 7.4V / 6600mAh Li-battery
50W: with 7.4V / 11000mAh Li-battery
Lumen: ≥70lm/W
Color temperature: 2700K-6500K
Charging time: 4.5-6.5 hours
Operation time: 3-3.5 hours
Mode: 100%-50%-OFF
IP44, CE/EMC/RoHS