Top-10 Pen Flashlights
Loved in the USA

The Streamlight 66134 Stylus Pro USB is a slim, lightweight pen flashlight designed for professionals like medical staff, law enforcement, and technicians who need a reliable light for close-up or low-light work. It delivers a bright 350 lumens output with a beam reaching about 109 meters, which is impressive for its compact size and ideal for inspecting small or confined spaces. Its rechargeable lithium-ion battery offers up to 1.5 hours on high brightness and charges quickly via USB in roughly 2.5 hours, removing the need for disposable batteries.

Durability is a strong point here—the aluminum body is water-resistant (IPX4) and can withstand drops from up to 1 meter, making it tough enough for everyday professional use. The light’s ultra-slim design and light weight (just 1.76 ounces) make it easy to carry in pockets or clips. The sliding metal sleeve protects the USB charging port, adding to its ruggedness.

This pen light is a solid choice if you want a dependable, bright, and rechargeable flashlight that's durable and portable for professional or everyday low-light tasks. It may not be the best fit for those needing long-lasting battery life or a very long beam, but for most inspector or medical uses, it covers the essentials well.

The OLIGHT Arkfeld Pro is a compact and versatile pen-flashlight designed for everyday carry and outdoor use. It packs a strong 1300-lumen white LED, delivering bright and clear illumination suitable for most tasks. What sets it apart is the inclusion of three light sources: white, green beam, and a powerful UV light at 365nm, which is stronger and more professional than typical UV flashlights. This makes it useful not just for general lighting but also for specialized needs like detecting fluorescent materials or working in dark environments.

The flashlight is rechargeable with a built-in lithium polymer battery, and it features a helpful battery level indicator that shows you how much power remains, so you’re not caught off guard. Its sturdy aluminum build offers good durability and water resistance, making it reliable in various conditions. The size is compact, fitting comfortably in your pocket at just under 5 inches long and weighing about 6 ounces, so it’s easy to carry around all day.

Switching between the three light modes is done via a circular selector, which is intuitive but might take a little getting used to if you prefer simpler on/off buttons. The green beam output is low-powered (class 3R), which is safe but less bright compared to the white light, mainly serving specialized purposes rather than wide illumination. For those seeking a pocket-friendly flashlight that covers general bright lighting and also offers UV and green light options for outdoor, emergency, or work use, the Arkfeld Pro represents a solid choice. However, if you only need a basic white light or prefer simpler controls, this might feel a bit more complex than necessary.

The OLIGHT Arkfeld Ultra is a compact and versatile pen-flashlight designed for everyday carry and outdoor use. It delivers a strong 1400 lumens of white light, which is bright enough for most tasks like working, camping, or emergency needs. In addition to the white beam, it offers a UV light and a green beam, expanding its usefulness for checking items, detecting stains, or special signaling.

The flashlight uses a rechargeable lithium polymer battery, which is convenient and eco-friendly, and it includes a magnetic charging cable for easy recharging. Its size is slim and lightweight (just over 4 ounces), making it comfortable to carry in a pocket without feeling bulky. Made from O-aluminum, the Arkfeld Ultra feels sturdy and durable, with a high-quality glass lens that resists scratches and maintains clear light output over time. The matte olive-green finish gives it a sleek, modern look, and it is also waterproof, which helps in various weather conditions.

While it has multiple beams, the green and UV lights are relatively low power (green ≤5mW), so they are best suited for specific tasks rather than illumination. Also, the compact size means its battery life might be shorter under high brightness use compared to bigger flashlights. This pen-flashlight is ideal for those looking for a reliable, multi-purpose light that can handle daily tasks, outdoor adventures, and specialized needs without taking up much space.