Detailed Product Description

Size	210MM*37MM*26MM	NetW	172
Material	6061-T6 Aluminum	Anodise	HaIII
LED	CREE XM-L T6-1C	Power	2x18650/(not included)
Reflector	Aluminum Drop-in	Lumen	855 lumens
Protection	IPX 8	Mode	5 (H-M-L-Strobe-SOS)

The max zoomable length:20mm

Purcharse link:

http://www.cnqualitygoods.com/goods.php?id=1517