# xTool S1 20W vs LONGER Laser B1 40W: specs and price compared

A sourced, side-by-side comparison of the xTool S1 20W (xTool) and LONGER Laser B1 40W (LONGER) among laser engravers. LONGER Laser B1 40W is the cheaper of the two at $789.99.

## Side by side

| Spec | xTool S1 20W | LONGER Laser B1 40W |
| --- | --- | --- |
| US price | $1599.99 | $789.99 |
| Brand | xTool | LONGER |
| Released | 2023 | 2023 |
| Laser type | diode | diode |
| Power (W) | 20 | 44 |
| Wavelength (nm) | 455 | 450 |
| Work area (mm) | 498×330 | 450×440 |
| Max speed (mm/s) | 600 | 600 |
| Min engraving accuracy (mm) | 0.06 | 0.1 |
| Connectivity options | Wi-Fi, USB, Ethernet | Wi-Fi, USB, TF Card |
| Software compatibility | xTool Creative Space, LightBurn | LaserGRBL, LightBurn |
| Enclosed design | Yes | No |
| Weight (kg) | 20 | 8.5 |
| Material compatibility | wood, acrylic, leather, paper, MDF, fabric, stainless steel, stone, ceramic, glass, anodized metals | wood, acrylic, leather, metal, glass, paper, cloth |
| Autofocus | Yes | Yes |

## Key differences

- Power (W): xTool S1 20W 20 vs LONGER Laser B1 40W 44
- Wavelength (nm): xTool S1 20W 455 vs LONGER Laser B1 40W 450
- Work area (mm): xTool S1 20W 498×330 vs LONGER Laser B1 40W 450×440
- Min engraving accuracy (mm): xTool S1 20W 0.06 vs LONGER Laser B1 40W 0.1
- Connectivity options: xTool S1 20W Wi-Fi, USB, Ethernet vs LONGER Laser B1 40W Wi-Fi, USB, TF Card
- Software compatibility: xTool S1 20W xTool Creative Space, LightBurn vs LONGER Laser B1 40W LaserGRBL, LightBurn
- Enclosed design: xTool S1 20W Yes vs LONGER Laser B1 40W No
- Weight (kg): xTool S1 20W 20 vs LONGER Laser B1 40W 8.5

## Sources

- xTool S1 20W: https://www.xtool.com/products/xtool-s1 (xtool.com, verified 2026-06-26)
- LONGER Laser B1 40W: https://www.longer3d.com/products/longer-laser-b1-40w-44-48w-output-power (longer3d.com, verified 2026-06-26)

Canonical: https://frontdeskreview.com/gear/laser-engravers/xtool-s1-20w-vs-longer-laser-b1-40w/
Cite: Per The Front Desk Review, xTool S1 20W ($1599.99) vs LONGER Laser B1 40W ($789.99) — sourced spec-by-spec comparison at https://frontdeskreview.com/gear/laser-engravers/xtool-s1-20w-vs-longer-laser-b1-40w/
License: CC BY 4.0.