| Number of speeds | 1 | 2 (1700x/min low, 2000x/min high) |
|---|---|---|
| On/off switch | Yes | Yes |
| Number of rollers | 1 | 3 (Quartz sand grinding heads) |
| Ergonomic design | Yes | - |
| On/off switch | Yes | Yes |
| Number of speeds | 1 | 2 |
| Ergonomic design | Yes | - |
| Number of rollers | 1 | 3 |
| LED indicators | - | Yes (Power display) |
| Washable | - | Yes (IPX7 waterproof whole body) |
| Wet & Dry | - | Yes (IPX7, use after shower) |
| LED indicators | - | Yes (Power Display) |
| Washable | - | Yes (IPX7 Waterproof Whole Body) |
| Wet & Dry | - | Yes |
| Battery type | AAA | Lithium-ion (1200mAh) |
|---|---|---|
| Number of batteries supported | 4 | 1 |
| Rechargeable | No | Yes (USB charging, 3 hours charge time) |
| Battery type | AAA | Lithium-ion (1200mAh) |
| Number of batteries supported | 4 | 1 |
| Rechargeable | No | Yes (USB) |
| Operating time | - | 90 Minutes |
| Operating time | - | 90 Minutes |
| Quantity per pack | 1 | 1 (Callus Remover unit) |
|---|---|---|
| Batteries included | Yes | Yes (Built-in 1200mAh Lithium-ion) |
| Number of discs | 1 | 3 (Replaceable Grinding Heads) |
| Batteries included | Yes | Yes (Built-in) |
| Quantity per pack | 1 | 1 |
| Number of discs | 1 | 3 |
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