Convoy M21H vs Fenix E08R UE size comparison
The Fenix E08R UE is 1.8 mm (0.07 in) shorter than the Convoy M21H, and 9 mm narrower at its widest point.
Fenix E08R UE: Photo: Fenix · Image policy
The Fenix E08R UE is 1.8 mm (0.07 in) shorter than the Convoy M21H, and 9 mm narrower at its widest point.
Dimensions
| Convoy M21H Check price ↗ | Fenix E08R UE Check price ↗ | |
| Length | 130.8 mm (5.15 in) | 129 mm (5.08 in)−1.8 mm |
| Head / width | 40 mm (1.57 in) | 31 mm (1.22 in)−9 mm |
| Body | 27 mm (1.06 in) | — |
| Tail | 28.5 mm (1.12 in) | — |
| Thickness | — | 18 mm (0.71 in) |
| Weight | — | 125 g with battery |
| Battery | 21700 | Built-in |
| Max output | — | 1,600 lm |
| Throw | — | 160 m |
| Type | EDC | EDC |
| Price | from $44.95 at nealsgadgets.com, as of Nov 4, 2026 | $84.95 at fenixlighting.com, as of Nov 4, 2026 |
| Source | nealsgadgets.com sourced | fenixlighting.com sourced Listed 31.0 mm wide x 18.0 mm thick |
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M21H vs E08R UE: how they differ
Size and weight
The Fenix E08R UE is the shorter light: 129 mm (5.08 in) against 130.8 mm (5.15 in), a difference of 1.8 mm (1%). At its widest point the Fenix E08R UE is 9 mm slimmer (31 vs 40 mm).
Brightness and throw
The Fenix E08R UE is rated at 1,600 lm; we have no published maximum for the Convoy M21H.
Battery
The Convoy M21H runs on a removable 21700 battery; the Fenix E08R UE runs on a built-in rechargeable battery. Only the Convoy M21H lets you swap in a charged spare.
Price
When we checked on Nov 4, 2026, the Convoy M21H was from $44.95 at nealsgadgets.com and the Fenix E08R UE $84.95 at fenixlighting.com, so the Convoy M21H cost $40.00 less. Prices change often, so check the current price before you buy.
Type
Both are EDC lights in our catalog.
Which should you buy?
Choose the Convoy M21H if you want a removable cell you can swap. Choose the Fenix E08R UE if you want a slimmer profile (9 mm narrower) and a built-in battery with no separate cell to buy. We compare published size, weight, output, throw and battery only, not runtime, interface or build quality.
Check price ↗ Convoy M21H Check price ↗ Fenix E08R UE
We may earn a commission from these links, at no cost to you. Rankings are never paid for. Disclosure
M21H vs E08R UE FAQ
Which is smaller, the Convoy M21H or the Fenix E08R UE?
The Fenix E08R UE is the shorter light: 129 mm (5.08 in) against 130.8 mm (5.15 in), a difference of 1.8 mm (1%). At its widest point the Fenix E08R UE is 9 mm slimmer (31 vs 40 mm).
Which is cheaper, the Convoy M21H or the Fenix E08R UE?
When we checked on Nov 4, 2026, the Convoy M21H was from $44.95 at nealsgadgets.com and the Fenix E08R UE $84.95 at fenixlighting.com, so the Convoy M21H cost $40.00 less. Prices change often, so check the current price before you buy.
Do the Convoy M21H and Fenix E08R UE use the same battery?
The Convoy M21H runs on a removable 21700 battery; the Fenix E08R UE runs on a built-in rechargeable battery. Only the Convoy M21H lets you swap in a charged spare.
Compare Convoy M21H with similar lights
Compare Fenix E08R UE with similar lights
More
Sources
- Convoy M21H: specs from manufacturer published specs as listed by nealsgadgets.com. Drawing: outline from published specs. Price from $44.95 from nealsgadgets.com, checked Nov 4, 2026; prices change often.
- Fenix E08R UE: specs from Fenix product page (manufacturer). Photo from manufacturer: the maker's own product photo with the background removed, scaled to the published length and diameter (Photo: Fenix; image policy). Price $84.95 from fenixlighting.com, checked Nov 4, 2026; prices change often.
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