- Brand: UltraFire
- Model: 501B
- Quantity: 1
- Color: Black
- Material: Aluminum alloy
- Color BIN: Blue
- Emitter Type: XR-E
- Emitter BIN: J
- Voltage Input: 3.0~4.2V
- Battery Configuration: 1 x 18650 (not included)
- Circuitry: 1000mA
- Brightness: 32lm
- Runtime: 2~3 hours
- Number of Modes: 1
- Mode Arrangement: Steady on
- Mode Memory: No
- Switch Type: Clicky
- Switch Location: Tailcap
- Lens: Glass
- Wave length: 450~490nm
- Reflector: Aluminum Textured
- Packing list:
- 1 x Flashlight
- 1 x Holster

Dimensions: 5.24 in x 1.26 in x 1.26 in (13.3 cm x 3.2 cm x 3.2 cm)
Weight: 3.35 oz (95 g)