Today Casio, Hodinkee, and John Mayer debuted a collaborative limited edition version of the G-Shock Ref. 6900.

Inspired by the Casiotone SK-5 sampling keyboard that Mayer played growing up. “The Casiotone SK-5 was instrumental in Mayer’s musical education, and acts as the design catalyst for this timepiece,” according to the Hodinkee. First launched in 1995, the G-Shock reference 6900 is the iconic Japanese made triple-graph digital quartz watch model that helped Casio gain traction on the fashion and streetwear scene.

Casiotone SK-5 Sampling Keyboard

“When Casio approached me about the possibility of working together on a G-SHOCK, it actually timed out really well,” said Mayer. “I had already been pretty deep into wearing the ‘Mudmaster’ models, and something felt cosmically right about a G-SHOCK being the first watch collab I’ve ever done. Casio keyboards came to mind as much as the watches did. Then I remembered how important the Casiotone SK-5 was in my life, and it got exciting really fast. It’s the perfect bridge between my double life as a musician and a watch enthusiast.”

As you can see, the slate-gray body and yellow and teal highlight colors of the DW6900, tie directly into the SK-5 aesthetic. The case measures 53.2 mm by 16.3 mm, weighs 67g, and is made of resin with a stainless steel caseback that’s engraved with “JOHN MAYER” and “HODINKEE.” Water-resistance is rated to 100 meters.

Casio G-Shock x Hodinkee Ref. 6900 John Mayer caseback

The Casio G-Shock 6900 Hodinkee x John Mayer functions include hours, minutes, seconds, date, 1/100th second stopwatch, countdown timer, multi-function alarm, hourly time signal, 12/24 hour time formats, flash alert, EL backlight.

Retail is $180 and the watch is available at Hodinkee,, G-Shock SoHo, and select G-Shock retailers (Ref. DW6900JM20-8CR).

Posted by:Jason Pitsch

Jason Pitsch is the Founder of Professional Watches. He appreciates good craftsmanship in everything from architecture to automobiles to cameras to clothing. Yet his focus for the past decade has remained consistent on covering just one type: watchmaking.