TURBO CRIntensity and run time are competing factors in the design of a hand held lighting device. Extreme intensity requires energy. The greater the intensity, the more significant the energy drain. The Turbo resolves this issue. It provides an intermittent or constant-on output of 720 lumens with a one hour run time as measured against the ANSI FL-1 Standard.The Turbo is machined from 6061 T6 aluminum. It is Type III hardcoat anodized with a matte black finish. The foamed vinyl grip provides thermal insulation and a firm hold. The Turbo belt clip is replaceable. It may be positioned lens up or lens down. The rotary switch selector allows the activation button to be set for Intermittent ? Locked ? Constant.All contacts and springs of the Turbo are gold plated for increased conductivity. The electronic circuitry drives a Cree XML2 U2 LED. The aluminum reflector of the Turbo is finished to produce a penetrating beam with no dark circles. Each Turbo is encased in a zippered ballistic carrier that may be used to store spare batteries or the removable pocket clip.? 720 Lumens (ANSI Standard)? 1 Hour Run Time? Type III Hardcoat Anodizing? Foamed Vinyl Grip? Reversible Pocket Clip? Intermittent ? Locked ? Constant Switch? 6.75" Long? Two CR123A & Link Case? Zippered Travel CaseTURBO USBThe charge port of the Turbo USB marries the light to an entire system of Lithium-Ion rechargeable lights and components. The 2010 micro USB protocol established a worldwide standard for cell phone chargers. All major manufacturers (BlackBerry, Motorola, Nokia, Samsung) agreed to use the Micro USB charge port on their phones.The Turbo USB adds a micro USB charge port, internal charge circuit and Lithium-Ion power cell to the iconic Turbo design. Premium Turbo features remain. A foamed vinyl grip accents a matte black Type III hardcoat anodized aerospace aluminum body. The four cut switch rotates to an Intermittent ? Locked ? Constant position. The detachable belt clip may be positioned lens up or lens down. All connectors and springs are gold plated. An electronic circuit board drives a Cree XML2 U2 LED to 720 lumens as measured against the ANSI FL-1 Standard.The bezel of the Turbo USB has a stainless steel accent ring. It protects the front edge of the light while venting heat. Loosening the head of the Turbo reveals the micro USB charge port. Attach the retractable charging cable to the supplied car charger, wall charger or to a computer USB port. Even a micro USB cell phone charger can be used to recharge the Turbo USB. The battery indicator of the Turbo blinks red when charging. It turns solid green when fully charged. The car charger and wall charger have a blue LED indicator to confirm that the power source is active. The chargers and cord are encased in a zipper ballistic carrier.? 720 Lumens (ANSI Standard)? 1.5 Hour Run Time? Micro USB Charge Port? Charge Indicator? Type III Hardcoat Anodizing? Foamed Vinyl Grip? Reversible Pocket Clip? Intermittent ? Locked ? Constant Switch? 6.75" Long? 18650 & Link Case? Zippered Travel Case