Product Name: Di Optical FC1 Red DOT Sight Reflex Sight Holographic Sight for 20mm Rail Toy Gun Hunting Accessory Model NO.: JHTYWYGFC1 Type: Red Dot Scope Structure: Reflex Sight Material: Alloy Color: More Colors Available Trademark: OEM Transport Package: Gift Box Specification: 50 x 35 x 40 mm (W/O Mount) Origin: China HS Code: 9620000000 Product Description Principal: Collimated Prismatic SightDot size: 2 MOAEye relief: UnlimitedLens size: 15 X 21 mmMagnification: 1X / No MagnificationBattery: CR2032 3V Lithium BatteryBrightness levels: 7 Night Vision, 7 DaytimeBattery life: 8654 Hours (at DT Level #3)Temperature range: -32 ~ 60 (-25 ~ 140)Length/Width/Height: 50 x 35 x 40 mm (W/O Mount)Night vision compatible: YesWeight: 170g (Not Including Battery)