The item is a simple and practical LED drop-in module flashlight replacement bulb, which is made of durable aluminum alloy material, and adopts XM-L T6 LED with a precision reflector to give off bright and smooth cool white light for illumination. It is a wonderful replacement flashlight bulb suitable for Ultra WF-501A, WF-501B, WF-501C, WF-501D, WF-502D, WF-502B, WF-503B, WF-504B, WF-501N, L2, C1, etc. With easy to install and use, it is really a wonderful LED drop-in module flashlight bulb for choice. - : As shown in the pictures.- Material: alloy and LED.- Adopt a solid-state XM-L T6 LED with a precision reflector that creates a smooth and bright cool white light.- design, enhance light output in intension and distance- and energy-saving, low heating, long service life- Convenience to install, and easy to operate. s- Current: - .- LED light color: white.- Voltage: 3.7V.- temperature: 6500K-7000K.- Lumens: 1000LM.- Fit for: Ultra WF-501A, WF-501B, WF-501C, WF-501D, WF-502D, WF-502B, WF-503B, WF-504B, WF-501N, L2, C1; M2, R5; S-R5; Sure 6P, G2, 9PProduct includes1 x flashlight(without )Friendly TipsPhoto color might be a little different from the actual product due to color display of different mon s.The size is measured by hands, please allow error of measurement. Please do not hesitate to contact us if you have any questions or require additional information.