I am not sure about it too because if i remember correctly models like your Mudman or solar powered casio watch, if u send to g factory or any casio authorized dealer they will send the watch back to Marco group Malaysia. I had a tough solar g shock which the rechargeable battery can only last for 2 hours after 8 hours under the sun, send to a shop and the guy said he doesn't have the kind of battery and i have to send back to Marco, now it is just sitting in the drawer

Maybe you can try the info below, email them or give them a call for inquiries, hope that helps
Offices:
Marco Corporation (M) Sdn. Bhd. (013431-H)
Marco Heritage Sdn. Bhd. (280030-V)
2-2nd Floor, Jalan Segambut,
51200 Kuala Lumpur
Malaysia
Tel: +603-4043 3111 Fax: +603-4041 9315 Email:
[email protected]Office Hours:
Monday to Friday: 9.00am – 6.00pm
Saturday and Sunday: Close