most powerful blue laser pointers flashlight irradiate 50000m series(2*26650)

Features: Save energy sources efficiently, the power saving rate is up to 10%~35%. Prolong 40% service life of electrical equipment. Stabilize the voltage and balance the current source. Prevent instant super high pressure and protect devices. Service life is up to 5~10 years. Reduce circuit's temperature and reduce the line loss.

features and functions: double speed, double thread, with foot pedal, LED sewing light, reverse sewing and much more. It's perfect for many home sewing projects: crafting, quilting, home decor, etc. Features: Double Thread Double Speed: help you create neat, straight and firmer stitch. 12 Stitch Patterns: meet your different needs of DIY sewing. Buttonhole Sewing: with buttonhole presser foot, easy to install. Tubular Sewing: slide tubular items like sleeves and trouser legs over the arm so you can sew them. Reverse Sewing: useful for reinforcing the end of seams, ensuring there are no loose ends. Foot Pedal Included: you can use hand switch or foot pedal to start(can not use simultaneously). LED Sewing Light: for easy threading, and you can see all the little details in your work. Stronger Ability to Eat Thick: easily to sew up to 6-layer denim, great for household use. Automatic Thread Winding: convenient for you to wind the bobbin thread. Thread Cutter: no scissors needed, saving your time. Stitch Adjustment(Thread Tension): conveniently adjust through the upper thread tension dial. Anti-slip Bottom Pads: ensure the machine stay firmly during operation, safe to use. Dual Ways for Power Supply: 4 * AA LR6 batteries(not included) or AC/DC power adapter. Note: You can only choose a kind of power supply, they can NOT be used at the same time. Otherwise, the machine won't run, or even be damaged!