Please follow this instructions;
The Wrist Remote must be fully charged before it is paired. Charging takes an hour or so, using the Micro USB cable provided. You can also do the whilst the Wrist Remote is being charged.
1. Make sure the X100 is turned off.
2.On the Wrist Remote, Press and HOLD the RECORD Video & SHOOT Photo buttons together (2 of the bottom buttons) for 2 seconds and then immediately Turn the X150 on.
4. A blue light will appear on the Wrist Remote once the pairing is complete. You can now release the buttons.
NOTE: Once paired, the X100 will recognise the Wrist Remote automatically.