Mini Soft Touch Push-button Switches (6mm square) x 10 pack : ID 3983 : $1.95 : Adafruit Industries, Unique & fun DIY electronics and kits
Soft key - Wikipedia
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2 PCS Dark Red Soft Shutter Release Button for Canon New F-1/F-1/AE-1(FD mount) | eBay
Mini Soft Touch Push-button Switches (6mm square) x 10 pack : ID 3983 : $1.95 : Adafruit Industries, Unique & fun DIY electronics and kits
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