A tiny, magnetic plastic keychain light that punches above its weight on features, let down mainly by a cool, off-target CCT.
Since the light is built from plastic, it obviously doesn't feel super high-quality or durable, but that's exactly what makes it incredibly light, perfect for a keychain light. The button is actually pretty nice, and it's recessed enough that it won't accidentally turn on in your pocket. The magnet is strong enough to hold the light horizontally, and honestly quite strong considering how small and light the light itself is. I was genuinely surprised by how small the E2 actually is, it looked much bigger in photos, and it reminds me a lot of my previous keychain light, a Nitecore Tiki, which has pretty much the same feature set, just with more throw and power.
📦 What's in the Box
- E2
- Type-C Charging Cable
- Key Ring
- User Manual & Warranty Card
📏 Physical Specifications
🛠️ Test Equipment
📷 Camera Settings
⚡ Battery & USB-C Charging Analysis
🕹️ User Interface
Single click turns the light on; holding the button ramps up the brightness. Double click switches to the side light, which can be set to breathing white, low steady white, or high steady white. Double-clicking again cycles through auxiliary modes: blinking red, blinking red-and-blue, or double-blinking red.
🔧 Measurement Setup
📊 Output, Tint, Throw & Beam Profile
| Mode | Output (lm) | CCT | DUV | CRI (Ra) | Intensity (cd) | ANSI Throw | Usable Throw | Ratio |
|---|---|---|---|---|---|---|---|---|
| Low | 6 | 6710K | -0.0051 | 67 | 9 | 6m | 3m | 1.5 |
| Medium | 43 | 6862K | -0.0061 | 67 | 83 | 18.2m | 9.1m | 1.93 |
| High | 145 | 6755K | -0.0051 | 68 | 223 | 29.9m | 14.9m | 1.54 |
📈 Runtime & Thermal Analysis
Turbo & Step-down: No discrete step-down - output starts at approximately 145 lm and declines steadily from the very first moments of the run.
Sustained Output: Drops quickly to roughly 100 lm within the first 30 seconds, then tapers gradually down to roughly 50-60 lm by the 20-minute mark, continuing to fade to about 20 lm by 27:00 before cutting off sharply to 0 right at 30:00, consistent with the battery's low-voltage protection kicking in.
Thermal Performance: Not logged for this review, no thermal data was recorded given the light's low output and minimal heat generation.