Black Diamond Cosmo Headlamp vs Black Diamond Deploy Run Light
Black Diamond Cosmo Headlamp ($44.95) vs Black Diamond Deploy Run Light ($69.95) — side-by-side specs, weight, pros and cons to help you pick the right headlamp.
Spec-by-spec
| Spec | Black Diamond Cosmo Headlamp | Black Diamond Deploy Run Light |
|---|---|---|
| Price | $44.95 | $69.95 |
| Weight | 88g | 48g |
| Max output | 350 lumens | — |
| Max burn time | 200 hours | — |
| Power | 3 x AAA or BD 1500 rechargeable (sold separately) | — |
| Waterproofing | IPX7 | — |
| Charging | USB-C with optional BD 1500 battery | — |
| Weight | 88 g (Black Diamond spec) | 48g (Black Diamond published) |
| Material | — | Not published |
| Output | — | 325lm max |
| Runtime | — | 30h max |
| Battery | — | 680mAh built-in Li-ion |
Pros & Cons
Black Diamond Cosmo Headlamp
- Light at 88 g
- Dual fuel: AAA or rechargeable pack
- Dimmable red LED
- IPX7
- Rechargeable battery sold separately
- 350 lumens is modest
- Dual-button interface takes a moment to learn
- No lockout listed on the spec sheet
Black Diamond Deploy Run Light
- 48 g
- USB-C charging
- 325 lm on high
- Battery is not replaceable
- Modest output for trail technical use
Black Diamond Cosmo Headlamp is the better value at $44.95. If weight matters most, Black Diamond Deploy Run Light carries lighter at 48g. Both are part of our curated headlamp index — tap through to check current pricing.