Introduction
How to access and remove the motherboard of the Martian Smartwatch
Tools
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Carefully lift the back plate off the watch. You will notice a lithium battery and rubber gasket attached to the back plate.
 
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Using the plastic removal tool, pry the battery from the backing plate. The battery is simply attached with glue.
 
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Use ESD safe tweezers to remove the gold ribbon cable.
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This will expose a second 5.2mm Phillips head screw that can be removed with a PH00 screwdriver.
 
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Use a spudger to gently pry on the motherboard towards the top of the watch, being towards the 12 o'clock position to loosen the motherboard.
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You can now access the parts and pieces on the bottom of, and below the motherboard.
 
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                            Conclusion
                          
                          To reassemble your device, follow these instructions in reverse order.
where to buy this battery?
Roy Caño -