Wearable electronic device including a supercapacitor

A wearable electronic device with an assembly 1 which comprises a microprocessor. The device has a strap 4 which contains at least one super/ultra capacitor 7, electrochemical capacitor, electrical double layer capacitor (EDLC) or Carbon-Ion (RTM) cell. There is also a connector 8, such as USB, which may be compatible with a mains AC/DC power unit, on the strap for charging the capacitor or cell from an external power source. The assembly may be embedded in the strap or detachable therefrom from a second connector. The assembly may also have a monitoring element for monitoring an element of the user such as heart-rate monitor. The strap may also have a battery or a void suitable for receiving a battery. There may also be a display 2 which can be touch sensitive. The assembly may also have RAM, a GPS unit, a motion sensor, Bluetooth (RTM) or Wi-Fi (RTM) capabilities. The capacitors may be sandwiched between layers of plastic or other electrical insulators and the strap may have an indicator for the charge status of the capacitors.