Streamlight 73003
Streamlight Nano 10-Lumen Miniature Keychain LED Flashlight
Model: 73003
Product Overview
The Streamlight Nano Light is a compact, weatherproof personal flashlight designed for convenience and durability. It features a long-lasting LED and comes with a non-rotating snap hook, making it ideal for attachment to keychains for easy, one-handed operation. This model is presented in a distinctive pink finish.

Image: The Streamlight Nano Keychain LED Flashlight in pink, showcasing its compact design and integrated snap hook.
Key Features:
- Case Material: Machined aircraft aluminum with an anodized finish, ensuring durability.
- LED Technology: Parabolic shaped LED area optimizes beam performance for efficient light output.
- LED Lifespan: Equipped with a 5mm White LED, impervious to shock, with an impressive 100,000-hour lifetime.
- Keychain Attachment: Includes a double-sided FOB featuring the Breast Cancer Pink Ribbon on one side and the Streamlight logo on the other, designed for easy attachment to keychains.
- Contribution: Streamlight donates $1 from each purchase of this product to the Breast Cancer Research Foundation.
Setup
The Streamlight Nano Flashlight comes with alkaline batteries included and is ready for immediate use. No complex assembly is required.
- Unpack: Carefully remove the flashlight from its packaging.
- Battery Check: The flashlight is pre-installed with batteries. To verify or replace, unscrew the head of the flashlight. Insert one LR41 alkaline button cell battery with the positive (+) end facing the LED.
- Attach to Keychain: Use the integrated non-rotating snap hook to attach the flashlight to your keys, backpack, or any desired location for convenient access.

Image: The Streamlight Nano Flashlight shown attached to a set of keys, demonstrating its portability and ease of integration with everyday items.
Operating Instructions
Operating the Streamlight Nano Flashlight is straightforward and designed for single-handed use.
- To Turn On: Twist the head of the flashlight clockwise until the LED illuminates.
- To Turn Off: Twist the head of the flashlight counter-clockwise until the LED turns off. Ensure it is fully tightened when off to prevent accidental activation and battery drain.

Image: A close-up view of the Streamlight Nano Flashlight, illustrating the twist-on/off mechanism at the head of the device.
Maintenance
Proper maintenance will ensure the longevity and optimal performance of your Streamlight Nano Flashlight.
- Battery Replacement: When the light dims significantly or fails to turn on, it's time to replace the battery. Unscrew the head of the flashlight and replace the LR41 alkaline button cell battery, ensuring correct polarity.
- Cleaning: Wipe the exterior of the flashlight with a soft, damp cloth. Do not use abrasive cleaners or solvents.
- Storage: If storing the flashlight for an extended period, it is recommended to remove the battery to prevent potential leakage and damage.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Light does not turn on. | Dead battery. Incorrect battery orientation. Head not fully twisted. | Replace battery. Ensure positive (+) end faces LED. Twist head firmly clockwise until light activates. |
| Light is dim. | Low battery. | Replace battery. |
| Water inside flashlight. | Head not fully tightened. O-ring damaged or missing. | Ensure head is fully tightened. Inspect and replace O-ring if necessary. Allow flashlight to dry completely before reassembly. |
Specifications
| Attribute | Detail |
|---|---|
| Model Number | 73003 |
| Brand | Streamlight |
| Color | Pink |
| Light Source Type | LED |
| Brightness | 10 Lumens |
| Runtime | 8 hours |
| Power Source | Battery Powered |
| Battery Type | LR41 Alkaline Button Cell (Included) |
| Material | Machined Aircraft Aluminum |
| Product Dimensions | 1.47"D x 0.43"W x 0.51"H |
| Item Weight | 0.634 ounces |
| Water Resistance Level | Water Resistant |
| Special Feature | Smallest Torch |
Warranty and Support
The Streamlight Nano Flashlight is backed by a Limited Lifetime Warranty. This warranty covers defects in materials and workmanship for the lifetime of the product, excluding normal wear and tear, abuse, or battery depletion.
For warranty claims, technical support, or further inquiries, please contact Streamlight customer service directly. Refer to the official Streamlight website or the packaging for the most current contact information.
Manufacturer: Streamlight
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