Table1) Specifications

1)Vortex XR-1	2)Vortex TR3	3)LEDLenser LL7459	4)Vortex CR-2	5)TigerLight GOLD	6)Streamlight Ultra-Stinger	7)Vortex DR-2	8)MAG Instruments 6V Rechargeable

Table 2)Ease of Use & Charging Details

Description
The Inova T4 is a svelte member of the police, security and tactical light categories. Being significantly shorter, narrower in diameter and more compact than the average light in this class, it is more easily stowed and carried than longer and fatter flashlights. Unlike other Luxeon LED competitors however, the T4 uses a Luxeon V emitter That has been slightly under-driven to deliver 4W output. Thanks to a highly innovative and efficient optical photon management design, it focuses the full power of emitted light into a tight and narrow beam. A departure from the beaten path, the narrow beam produced by the T4 has found wide acceptance by professionals in many fields that enjoy it's intense beam and very compact form factor. Such a beam allows for both intense close-up scrutiny of subjects as well the ability to throw light at a distance of nearly 200'. This makes it popular as a tactical light to be used in conjunction with a fire-arm or non-lethal weapon. The most conspicuous feature of the T4 is the signature high quality of fabrication that has put Inova into an elite category shared by few contenders. There is nothing to fault in this area. Down to the tinniest details, it exudes top drawer manufacturing in a mass produced product. Also typical of this company is packaging that represents the best branding and retail packaging in the flashlight business bar none.
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Sales Source:http://www.inovalight.com/ http://www.flashlightsunlimited.com/
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Specifications for:

• Dimensions:L=8" , Head Dia=1.1"
• Net weight:10.1oz
• Colors: Black Hard Annnodized III
• Composition: Body=100% T6 aluminum SS Bezel
• Bulb type: LuxeonIV 4W Emitter
• Average Bulb Life Expectancy:100,000 Hrs
• Battery Type: 6V LiIon (1 included)
• Charge Time:2.5 hrs for full charge
• A/C, Input requirements:Input 110V/220V
• DC, Input Requirements:12V
• Run-time (duration) to 50% of Maximum Brightness: 2hrs
• Accessories Included: Charge Cradle, Country specific A/C interface, AC adapter + 12V DC Adapter (Cig)
• Optional modular A/C plugs available
• Battery status and charging Indicator: Blue= Charging

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Evaluation Results & Summaries

Ease of Use
Excellent. The user simply locates and depresses the unique rectangular On/Off switch button near the head to turn the light On and Off in a similar manner to popular and venerable Police lights. Focus is fixed at the point of maximum spot. Charging involves the insertion of the head in such a manner that the two gold plated contact points on the head are aligned with corresponding contacts on the charging cradle. When thus attached and plugged into to either a 12V source via the included adapter or when connected to an A/C power, the blue light on the cradle lights up.
5 points
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Task performance optimization
Excellent. The T4 is a top contender in the LED subclass of Police/ Tactical / Security lights. It lacks superfluity and provides a very bright spot type beam of fair color for most tasks occurring at up to 190' feet away. Because it's compact, that means it's more like be stowed where the larger lights may not have enough space to live. We tested the T4 in typical tactical scenarios that included room clearing, vehicle inspection as well as the MDOI trial that attempts to measure how far away a black garbage may be positioned before a light cannot differentiate it from it's surroundings. In most case the T4 performed admirably. Unlike the more amber colored incandescent types, white LEDs tend to scatter airborne particles such as pollen, dust and water vapor. Such a shortcoming was easily remedied with the attachment of a (not included) amber/yellow filter to the front lens. The inclusion of a set of filters would make the T4 an even better package than it already is.
4.75 points
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Documentation Quality
Excellent. The instruction booklet is regionalized (English- as evaluated) . It's written and illustrated in precise, concise and professionally laid out step-by-step sections that enhance optimal information absorption and that minimize mistakes. Typographic font size is ideal and diagramming is highly professional.The manual is mercifully brief, condensing the anatomy and key operational procedures for the T4 into simple. comprehensible and easy to review pages
5 points
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Battery Charging (Ease, Frequency, Maintenance)
Excellent. Attaching the T4 to it's charging cradle is self-evident and though not totally 'foolproof' is certainly within the capability of anyone that might be deemed an operator of such a light. Switching from a 12V DC power source (automobile cigarette plug) to A/C power is as simple as disconnecting and reconnecting a well made coupler and mating it to its corresponding 'other half' on the selected cable. This detail alone is worth the price of admission as several competing products offer customers fingernail breaking type couplers to achieve the same result. Another detail worth mentioning is the quality of fabrication of these peripheral accessories. It's excellent. Of all the charging cradles reviewed for this project, the T4 cradle stands out as being built for harsh real-world use. Just handling it inspires confidence that it will not break upon casual impact with a tile floor or if accidentally caught in a car door.
Once the light has been inserted into the cradle, a bright blue LED light illuminates- signaling that charging is taking place. Once charging is complete,the light turns off. Charging takes 2.5 hrs from a fully depleted battery but in practice, all that is needed in most cases is a top-off charge after each use, Since Lithium Ion batteries do not have the same 'memory' issues associated with NiCads or the daily loss of energy associated with NiMH type cells, a fully charged T4 battery should hold most of its charge in storage and does not need to be 'dumped' and fully recharged to protect the battery.
5 points
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Balance, Grip-ability, Stow-ability, Tabletop Stand-ability
Good. The T4 handles well in most hands and especially well in small hands. The obvious shortness in length coupled with the narrow girth, makes it a viable tactical light in applications that employ the Surefire/Rogers or Harries hold positions. The light stows quickly and deploys quite quickly from pockets or holsters. It's an ideal candidate for stowage where larger lights simply will not fit such as : Automobile door pockets, glove boxes, tool boxes,tactical bags, tactical vests and so on. Unfortunately- though exquisite to behold, the Teflon like anodizing is quite slippery if grasped with wet or oily hands.
4 points
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Items of Note:
Exquisite presentation packaging and excellent manufacturer's warranty.
5 points

ABOVE- Retail Presentation Box


ABOVE, Left-charge cable coupling connector |Center & Right - Modular Interchangeable A/C Interface

ABOVE:12DC Adapter to> Cable connector

ABOVE, Battery charging station

ABOVE, Rechargeable Lithium Ion battery



ABOVE- Left. Head Detail Note: Stainless Steel bezel | Right,Tailpiece Note: Flat tail end

ABOVE,Left-Full-frontal view of head | Right,Direct Beam Shot at fixed spot focus (DBS)