Amazon with LOFTEK Direct has a 4 Pack of LOFTEK Battery Operated IP68 Waterproof Submersible Color Changing Underwater 13 LED Bead Lights with 164 ft. Range RF Remote Control  (03-20LDUS-478-010104FBA003) for $26 - 5% off coupon (check green "Save coupon" box) - $10 off with code 40M9H65R [Exp 1/20] = $14 with free shipping on $25+ or with Prime.