Milwaukee 2117-21 REDLITHIUM USB 400L Neck Light
Best hands-free lighting for professionals working in tight, demanding spaces.
Illuminate your workspace with the Milwaukee REDLITHIUM USB 400L Neck Light. Engineered for durability and extended use, this rechargeable light delivers 400 lumens of TRUEVIEW High-Definition Output, perfect for demanding tasks. Choose between two modes to optimize brightness and run-time, enjoying over 8 hours of light on a single charge. Its ergonomic, sweat-resistant band ensures comfort, while the adjustable head offers 130 degrees of vertical positioning. Built tough with an IP54 rating for dust and water resistance and a 6-foot drop rating, it's ready for any environment.
$99.97
Owner Satisfaction
4.7
/ 5
Category Rank
14
/ 1670
#14 in Electronics Accessories
Price vs Category Average
-38%
Below average
Light Output
400
/ Lumens
Who it's for
- Mechanics requiring simultaneous wide-area and focused task lighting
- Professionals already invested in the Milwaukee REDLITHIUM battery ecosystem
- Technicians needing both hands free for intricate repair work
Who should skip it
- Workers performing long shifts in hot or humid environments
- Inspectors needing to illuminate objects at a significant distance
- Users who prefer the convenience of standard, swappable batteries
Performance breakdown
Illumination Intensity
Four hundred lumens provide ample brightness for detailed, close-range professional tasks.
Durability Rating
Rugged construction handles drops and harsh jobsite conditions with ease.
Ergonomic Comfort
Sweat-resistant band remains comfortable during long shifts in demanding environments.
Battery Efficiency
Eight hours of runtime keeps you productive through a full workday.
Adjustability
Vertical head rotation allows for precise light placement exactly where needed.
Charging Speed
Two-hour recharge cycle minimizes downtime between heavy usage sessions.
Key Specs
Light Output
400 Lumens
Run-time
Over 8 Hours
Impact Rating
6 ft Drop Rating
Ingress Protection
IP54 Rated
Charging Time
2 Hours
Weight
0.5 lb
Height
1.5 in
Tool Warranty
Limited Lifetime Warranty (Excludes Batteries)
Features
- 400 Lumens TRUEVIEW High Definition Output
- Two modes for output and run-time management
- Over 8 hours of run-time
- 130° vertical light head adjustability
- Ergonomic, sweat-resistant band
- Chemical resistant construction
- IP54 dust and water ingress protection
- Quick 2-hour charging
What customers say
This neck light earns high praise for its superior adjustability and integration into the Milwaukee ecosystem. Users value the dual, independently controlled light heads, which provide precise, hands-free illumination perfect for detailed, close-quarters tasks. The 400 lumen output is consistently effective. While comfort is generally excellent for long wear, some professionals desire longer battery life for continuous full-day use. Despite a premium cost, the robust build quality and convenient USB rechargeable system confirm its status as a worthwhile investment for serious professionals needing reliable, adaptable lighting.
Know before you buy
The neck light provides over 8 hours of continuous runtime, depending on the brightness mode you select.
Yes, the light heads feature 130 degrees of vertical adjustability, allowing you to direct the beam exactly where you need it for close-up tasks.
It is built for rugged use with an IP54 rating for dust and water resistance and is tested to withstand drops from up to 6 feet.
The REDLITHIUM USB battery reaches a full charge in approximately 2 hours.
The band is designed with an ergonomic, sweat-resistant material, making it comfortable for extended wear even during physically demanding work.
Yes, the neck light is constructed with chemical-resistant materials, ensuring it remains durable even when exposed to common shop fluids.
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$100