Seiko / Think The Earth WN2 watch. Only available from Japan and a few online dealers.
The watch consists of three basic parts: the module holder with strap, the timing module itself, and the locking bezel.
The dial consists of a half-sphere representing the northern hemisphere. The sphere rotates counter clockwise with a silver hour marker. There's a tiny orange ball moving clockwise, counting the minutes. No seconds hand.
It's a fairly large watch. 45mm diameter, 22mm height. About the same size as a Citizen Eco-Zilla, but far lighter and more comfortable. The watch is made of aluminium with a stainless steel timing module.
The short, stiff original strap was replaced with a silicone Morellato. Very comfortable despite the larger size!