The ORIGINAL after-market laser designed and tested BY sewists FOR sewists. Fits on most sewing machines. This model has an eye friendly GREEN laser – less eyestrain, brighter, and easier to see. Includes a long lasting rechargeable battery so there is no need to find another outlet in your sewing area. No mounting brackets needed. All you need is the included self-adhesive hook and loop tape to move it from machine to machine. Keep your seams just where you want them to be without having to mark the fabric. Use the included Laser Alignment Guide to set the laser for the exact seam allowance you want. Half square triangles are fast and easy. Includes 3 heads – line, dot, and crosshair. The line creates a perfect straight line, the dot is ideal for applique, curved piecing, and following a stencil, and the cross hair is perfect to make sure your squares are true as well as to find the center of an embroidery hoop. No mounting brackets needed. Affixes easily to any available surface with the included hook & loop tape. Easily moves from machine to machine. All ViviLux products have a Manufacturers 100% Customer Satisfaction Guarantee ViviLux products are not to be sold on Amazon, to Amazon, or to unauthorized Third Party Sellers that resell on Amazon or any other marketplaces, including but not limited to Ebay, Etsy, Pintrest, Walmart, FB Marketplace, etc.. INCLUDED: • ViviLux 3-in-1 Green Laser with Rechargeable Battery • 3 adjustable laser heads • Laser Alignment Guide • USB charging cord • Hook & Loop tape