Here for trade for another rare Casio Marlin:
WS-710 blue: very good condition, almost no scratches on the crystal, good working 145 module. Not original watchband from "Bambi".
WS-701 grey: many scratches, sticky buttons but working module. No strap.
Both cases are with complete screws.
These WS-series are very rare on eBay and now you could have the grey+blue version together.
Crystals are not so hard to get.