This kit has been designed to be very easy to build and wear. With this setup you can use the phone app but you may have to get the android version from apk mirror. We offer this kit for the left or right arm! Large: Designed for use with any phone less than 177mm long, x 88mm wide x 18mm thick. This kit will fit a forearm up to 13" in circumference, and at least 8.5" long.Small: Designed for use with any phone less than 153mm long, x 77mm wide x 13.5mm thick. This kit will fit a forearm up to 11" in circumference, and at least 7.5" long. If your arm is larger in diameter please message us or leave an order note and we will send a spacer with the kit. If you request one after we ship it then we will have to charge a little extra for the spacer. Things you will need to finish the kit:3x - m4x10 or 8-32 x 1/2" screws2x - m4x16 or 8-32 x 3/4" screws The screws are for the moving dials. You can alternatively glue them on in a fixed position.A wire or tube about 6mm wide by 177mm or 7" longUtility or hobby knifeSand paper: 150 - 400 grit sand paper10mm - 20mm thick foam at least 177mm x 88mmFoam, padding or cloth for around your arm.Cyanoacrylate glue (Super Glue)Primer: Filler primer works bestPaintOptional: 2" wide double sided velcro
