The Ricoh WG-20 is 14.9 mm wider, 0.3 mm taller and 6 g heavier than the Olympus VR-310, and as deep.
| Olympus VR-310 | Ricoh WG-20 | |
|---|---|---|
| Size (W × H × D) | 100.6 × 58.2 × 28.5 mm | 115.5 × 58.5 × 28.5 mm |
| Weight | 158 g | 164 g |
| Lens | Fixed lens | Fixed lens |
| Sensor | 1/2.3" | 1/2.3" |
| Announced | 2011 | 2014 |