Product name:       LUMINTOP SD4A CREE XM-L2(U2) And CREE XP-L HI LED Flashlight           Brand:       LUMINTOP            Model:       SD4A           Emitter Brand       CREE           Emitter Type:        CREE XM-L2(U2) \/ CREE XP-L HI            Material:       Aluminum alloy           Total Emitters:       1           Mode:       8 Modes(Low-Mid-High-Turbo-Moonlight-Aviation Signal-SOS-Strobe)           Max Lumens:       SD4A-XML:1000LM    SD4A-XPL: 920LM           Max Runtime:       51h           Battery Configurations:       4 X AA or 1X D Cell           Switch Type:       Clicky           Switch Location:       Side           Working Voltage:       0.9v-6.4v           Intensity:       SD4A-XML:20300cd    SD4A-XPL: 40000cd           Peak Beam Intensity:       SD4A-XML:285m    SD4A-XPL: 400m           Impact Resistant       1.5m           Waterproof:       IPX-8           Weight:       178g(without battery)           Size:       112mm(L)x41mm(Head)x41mm(Body)   Features:  1. Utilizes CREE XM-L2(U2) LED or CREE XP-L HI LED with 50、000-hour lifetime   2. Output Mode\/Runtime:       SD4A-XML: Turbo: 1000lumens\/1.9hours、 High: 560lumens\/2hours、 Mid: 350lumens\/4hours、 Low: 37Lumens\/51hours、 Moonlight: 1.5Lumens\/552hours、                             Aviation Signal\/SOS\/Strobe: 1000Lumens       SD4A-XPL: Turbo: 920lumens\/1.9hours、 High: 510lumens\/2hours、 Mid: 310lumens\/4hours、 Low: 35Lumens\/51hours、 Moonlight: 3Lumens\/552hours、                             Aviation       Signal\/SOS\/Strobe: 920Lumens   3. High strength aerospace aluminum alloy construction with anti-scratching type HAIII military grade hard-anodized finish; Consistent silo integrated structure to ensure       the best heat dissipation   4. Reflector:       SD4A-XML: Precision micro-textured reflector creates smooth、 optimized beam       SD4A-XPL: Optimized ultra-precise reflector offers a longer beam distance than competing products   5. Double-side AR coated、 tempered window resists impact and thermal shock、 maximizes light transmission (99% light transmittance   6. High-efficiency digitally regulated circuit to maintain a constant brightness as battery life diminishes   7. Intelligent advanced temperature regulation system allows SD4A to adjust output performance according to its body temperature to ensure stable and safe operation   8. Reverse polarity protection to protect from improper battery installation   9. Dual-button side switch design with battery low indicator in on\/off button provides one-handed operation and easy access to all functions 10. Intelligent memory function stores last mode accessed 11. Stainless steel anti-rolling head retaining ring、 artistic and effectively protects the light from drops and impacts. 12. Intimate and exquisite Knurling body design、 make it more reliable an