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- HT18R vs S21
Fenix HT18R vs RovyVon S21
What HT18R does better (0) and where S21 wins (2) — every spec side by side.
Why is HT18R better than S21?
HT18R has no measurable advantages in this pair.
Why is S21 better than HT18R?
- Weight326 g vs 116 g2.8×
- Maximum output2,800 lm vs 3,000 lm+7%
Specifications
Side by side
| Light output | ||
| Maximum output | 2,800 lm | 3,000 lm |
| Peak beam intensity | 302,500 cd | — |
| Beam distance (ANSI FL1) | 1,100 m | — |
| Light source | LED | LED |
| LED & beam | ||
| LED emitter | Luminus SFT-70 | — |
| LED maker | Luminus | — |
| Colour temperature | 6,500K | — |
| Battery & charging | ||
| Battery | 21700 Li-ion | — |
| Battery capacity | — | 5,000 mAh |
| Maximum runtime | 42 h | — |
| Rechargeable | Yes | Yes |
| USB-C charging | Yes | Yes |
| Battery level indicator | Yes | Yes |
| Build & durability | ||
| Protection rating | IP68 | IP68 |
| Water protection (IPx) | IPx8 | IPx8 |
| Magnetic tail / base | — | Yes |
| Size & weight | ||
| Length / height | 188.5 mm | — |
| Head diameter / width | 68 mm | — |
| Body diameter / depth | 25.4 mm | — |
| Weight | 326 g | 116 g |
| Modes & features | ||
| Switch | Dual switches | — |
| Strobe | Yes | — |
| SOS / beacon | Yes | — |
| Red light | Yes | — |
| Green / blue / RGB light | Yes | — |
