ReyLight LANapple-Aluminum Nichia 519a 4000K R9080

Comes with a rechargeable 14500 Li-ion battery

head dia: 21.5mm/0.85 inch

total length: 97.5mm/ 3.84 inch

(battery included) weight: 65g/ 2.29 oz 

Group1: (Moonlight)-2%-20%-100%  ( Default)

Group2: (ML)-10%-40%-100%

Group3: (ML)-2%-10%-50%

Group4: (ML)-50%-100%-strobe-SOS

Click here for  the programming guide.