Fenix TK28R vs Sofirn SP36 Pro size comparison
The Sofirn SP36 Pro is 21.1 mm (0.83 in) shorter than the Fenix TK28R, and 1 mm narrower at its widest point. Weights are published on different bases (without battery vs with battery), so compare them with care.
The Sofirn SP36 Pro is 21.1 mm (0.83 in) shorter than the Fenix TK28R, and 1 mm narrower at its widest point. Weights are published on different bases (without battery vs with battery), so compare them with care.
Dimensions
| Fenix TK28R Check price ↗ | Sofirn SP36 Pro Check price ↗ | |
| Length | 147.8 mm (5.82 in) | 126.7 mm (4.99 in)−21.1 mm |
| Head / width | 51 mm (2.01 in) | 50 mm (1.97 in)−1 mm |
| Body | 32 mm (1.26 in) | — |
| Weight | 358.3 g with battery | 300 g without battery |
| Battery | 18650 | 3x 18650 |
| Max output | 6,500 lm | 8,000 lm |
| Throw | 400 m | — |
| Type | Thrower / search | Thrower / search |
| Price | $219.95 at fenixlighting.com, as of Nov 4, 2026 | from $56.99 at flashlightgo.com, as of Nov 4, 2026 |
| Source | fenixlighting.com sourced Dual-head design: listed 51 mm high x 32 mm wide | flashlightgo.com sourced Only head diameter listed |
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TK28R vs SP36 Pro: how they differ
Size and weight
The Sofirn SP36 Pro is the shorter light: 126.7 mm (4.99 in) against 147.8 mm (5.82 in), a difference of 21.1 mm (14%). At its widest point the Sofirn SP36 Pro is 1 mm slimmer (50 vs 51 mm). Weights are published on different bases (Fenix TK28R: 358.3 g with battery; Sofirn SP36 Pro: 300 g without battery), so they are not directly comparable.
Brightness and throw
The Sofirn SP36 Pro is rated brighter: 8,000 lm maximum vs 6,500 lm for the Fenix TK28R, 23% more.
Battery
The Fenix TK28R runs on a removable 18650 battery; the Sofirn SP36 Pro runs on removable 3x 18650 batteries.
Price
When we checked on Nov 4, 2026, the Fenix TK28R was $219.95 at fenixlighting.com and the Sofirn SP36 Pro from $56.99 at flashlightgo.com, so the Sofirn SP36 Pro cost $162.96 less. Prices change often, so check the current price before you buy.
Type
Both are throwers / search lights in our catalog with a tube body.
Which should you buy?
Choose the Sofirn SP36 Pro if you want a shorter light (21.1 mm shorter) and more output (8,000 lm vs 6,500 lm). On the specs we track, the Sofirn SP36 Pro is ahead or level everywhere; the Fenix TK28R makes sense mainly if its price, interface or a feature we don't track suits you better. We compare published size, weight, output, throw and battery only, not runtime, interface or build quality.
Check price ↗ Fenix TK28R Check price ↗ Sofirn SP36 Pro
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TK28R vs SP36 Pro FAQ
Which is smaller, the Fenix TK28R or the Sofirn SP36 Pro?
The Sofirn SP36 Pro is the shorter light: 126.7 mm (4.99 in) against 147.8 mm (5.82 in), a difference of 21.1 mm (14%). At its widest point the Sofirn SP36 Pro is 1 mm slimmer (50 vs 51 mm). Weights are published on different bases (Fenix TK28R: 358.3 g with battery; Sofirn SP36 Pro: 300 g without battery), so they are not directly comparable.
Which is brighter, the Fenix TK28R or the Sofirn SP36 Pro?
The Sofirn SP36 Pro is rated brighter: 8,000 lm maximum vs 6,500 lm for the Fenix TK28R, 23% more.
Which is cheaper, the Fenix TK28R or the Sofirn SP36 Pro?
When we checked on Nov 4, 2026, the Fenix TK28R was $219.95 at fenixlighting.com and the Sofirn SP36 Pro from $56.99 at flashlightgo.com, so the Sofirn SP36 Pro cost $162.96 less. Prices change often, so check the current price before you buy.
Do the Fenix TK28R and Sofirn SP36 Pro use the same battery?
The Fenix TK28R runs on a removable 18650 battery; the Sofirn SP36 Pro runs on removable 3x 18650 batteries.
Compare Fenix TK28R with similar lights
Compare Sofirn SP36 Pro with similar lights
More
Sources
- Fenix TK28R: specs from Fenix product page (manufacturer). Price $219.95 from fenixlighting.com, checked Nov 4, 2026; prices change often.
- Sofirn SP36 Pro: specs from manufacturer published specs as listed by flashlightgo.com. Price from $56.99 from flashlightgo.com, checked Nov 4, 2026; prices change often.
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