Here are my Casio Skywalker (DW401) and Surfing Timer (DW403 ). One of the most interesting chronograph dials ever and useful speed timing functions.... | By The Crown and Bezel | Facebook
Vintage Casio Tachy Meter DW-400 905 200m Digital Wristwatch - Jumbo 44mm 79767256135 | eBay
Vintage Casio Sky Walker 200M 905 DW-401 Watch Mens Excellent - Etsy Israel