This is TTS-55 PRO, upgraded version of TTS 55, Laser power: 5500mW. 2/Advanced Laser Technology: TTS-55 PRO laser module uses the latest LD+FAC+C-Lens compression spot technology, fixed focus, focal length is only 23mm, compared with other long focus lasers, short focus laser has stronger engraving and cutting ability.Engraving accuracy is 0.1mm.
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