This comparison shows 4 objects drawn to scale. Drag the view to rotate it, or add your own items to the comparison.

| Object | As entered | Centimetres | Inches |
|---|---|---|---|
| O2 Mini | 198 × 19.5 × 85.8 mm | 19.8 × 1.95 × 8.58 cm | 7.8 × 0.77 × 3.38 in |
| RP5 (opens on Amazon in a new tab) | 19.9 × 1.56 × 7.8 cm | 19.9 × 1.56 × 7.8 cm | 7.83 × 0.61 × 3.07 in |
| RP2S (opens on Amazon in a new tab) | 155 × 28.0 × 80.6 mm | 15.5 × 2.8 × 8.06 cm | 6.1 × 1.1 × 3.17 in |
| RPMini (opens on Amazon in a new tab) | 16.5 × 1.7 × 7.7 cm | 16.5 × 1.7 × 7.7 cm | 6.5 × 0.67 × 3.03 in |

| Object | Volume | vs smallest |
|---|---|---|
| O2 Mini | 331 cm³ | 1.5× |
| RP5 (opens on Amazon in a new tab) | 242 cm³ | 1.1× |
| RP2S (opens on Amazon in a new tab) | 350 cm³ | 1.6× |
| RPMini (opens on Amazon in a new tab) | 216 cm³ | 1× |
* Height × width × depth of the box each object fits in, not the object's own volume. Multiples are against the smallest box here, RPMini.