The G-Shock GM-5600SN-1 was previously thought to be a China-only model that was released with the GM-110SN-2A as part of a BE@RBRICK collaboration known as the Shanghai Night Series. The GM5600SN-1 is now available in the U.S. at Reeds Jewelers for $260, and it is also expected to be available at gshock.com and other retailers soon. The analog-digital GM-110SN-2A is not expected to be released in the U.S.
The GM5600SN-1 features a stainless steel bezel with a rainbow IP, an inverted and pink-tinted LCD display, and a black resin band. It is designated as a limited edition, but it does not include the special BE@RBRICK packaging or supplemental items like the China version. It does include an exclusive box and case with a city nightscape motif.
Update: The GM-110SN-2A and GM-5600SN-1 are being released throughout Asia in July. The GM-5600SN-1ER is also available in the U.K. at g-shock.co.uk and is expected to be released throughout Europe soon.
G-Shock GM-5600SN-1 (GM5600SN-1 for U.S.):
G-Shock GM-110SN-2A:
Asia Box and Case:





Best-Selling G-Shocks, Our Amazon Collections (affiliate links) | 20 Best G-Shocks | Specs Catalog