[SOLVED] Pebble Time (Steel) - what kind of microswitch is needed?

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New member
Jan 20, 2023

Some time ago I managed to buy a working second-hand "Pebble Time Steel"... well, almost working. The watch succeeded to connect via bluetooth, showed information on screen properly, was responsive. The only things that worked wrong was the almost worn battery and non-working "back" button.

I like PTS, it has some unique functions that modern smartwatches miss... so I decided to repair it and use as my primary watch.

Never mind the battery, the new one is on its way from Aliexpress. The "back" button however is a big challenge. The previous owner tried to repair it, but he didn't succeed. The only goal he managed was to solder out the microswitch and... leave an empty space. :( So right now I have PTS with a working motherboard and empty space where the microswitch was.

I tried to find out what type of microswitch it is. Hours of searching internet and online catalogues returned poor results. The only switch that is close to the size of the original was Omron B3U-3000P-B, but it is still a bit too big. A bit risky to use it due to the SMD resistor placed close to the switch. The original switch is 3mm in width, 2mm deep and 2mm high.

Can you please help me to find the appropriate model of the switch?

There is also another way... does somebody have a broken "Pebble Time" or "Pebble Time Steel" motherboard to sell? I could use switch to replace it to my PTS board.

Here are some photos:
- The first photo shows the motherboard, the arrow points the empty space
- The second photo shows one of the other switches
- The third photo shows the front of the switch - there is a black micro knob mounted to the golden spring circle

Sorry for the poor sharpness, my phone doesn't have "macro" mode.


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Senior Member
Jun 23, 2020
Samsung Galaxy Note 10+
Welcome to XDA.
This device dates back to when?
This site may have a plan if you contact them if the watch dates back 6+ years.
Conversely buying a parts queen cheap might work but you better have excellent desoldering/ soldering skills. These pcbs are easily damaged.

Digikey or Mouser Electronics may have something that small. You need to know what type of switch it is ie NC or NO, single pole etc.
No easy task...


New member
Jan 20, 2023
OK, I contacted Rebble Discord and they really helped. :) Just for your information if someone needs it: this is the Panasonic TACT switch of "EVPAV" series. Right now there is only one model available (EVPAVAA1A) that is a bit thinner than the original Pebble one, but I will find a way to solder it properly. :)

You can close this thread. :)
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