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- EC90 vs S21
Acebeam EC90 vs RovyVon S21
What EC90 does better (1) and where S21 wins (0) — every spec side by side.
Why is EC90 better than S21?
- Maximum output4,300 lm vs 3,000 lm+43%
Why is S21 better than EC90?
S21 has no measurable advantages in this pair.
Specifications
Side by side
| Light output | ||
| Maximum output | 4,300 lm | 3,000 lm |
| Peak beam intensity | 82,082 cd | — |
| Beam distance (ANSI FL1) | 573 m | — |
| Runtime at maximum output | 360 min | — |
| Light source | LED | LED |
| Battery & charging | ||
| Battery | 21700 Li-ion | — |
| Battery capacity | — | 5,000 mAh |
| Maximum runtime | 260 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 |
| Impact resistance (drop) | 1.5 m | — |
| Magnetic tail / base | Yes | Yes |
| Pocket clip | Yes | — |
| Size & weight | ||
| Length / height | 137.5 mm | — |
| Head diameter / width | 40 mm | — |
| Body diameter / depth | 27.8 mm | — |
| Weight | — | 116 g |
| Modes & features | ||
| Switch | Side switch | — |
| Strobe | Yes | — |
