Batteries:AAA*3pcs Size: 1" diamenter * 5-3/4" length Detachable 15" neck strap Foam protected package for field transportantion 3 brightness mode Red LED*1pc for map reading 3 High efficient White LED*3pc for field illumination 1 Min. time delayed Green Laser Switch allows hand free telescope Aiming adjustment 1" diameter fits most finder scope mounts 1 stand 1/4"-20 screw hole ready for any tripod mount Suitable for Military, outdoors, astronomy, science Construction/refinery/mining industries etc