how to add touch and hold to change product image on Stiletto-new theme on mobile?

[unagraphics]

hi, is there a way to add a touch and hold to change product image on Stiletto-new theme on mobile or arrows on product images. I already have hover over image on desktop and want something similar for mobile

thanks !

[unagraphics]

www.unagraphics.com but I havent opened my store so its locked by pw