Happened upon this whilst looking at something totally unrelated. Isn't the interweb thingy wonderful sometimes?
https://www.banggood.com/CYCPLUS-2-in-1-150PSI-Hand-held-USB-Rechargeable-Automatic-Air-Inflator-for-All-Models-Bicycle-with-Schrader-Presta-Pressure-Monitor-LED-Emergency-Lighting-p-1126440.html?rmmds=category&utm_source=google&utm_medium=cpc_ods&utm_content=Eva&utm_campaign=nrm-ljj-cycl-577674-all&utm_design=75&gclid=CO32zeTSl9YCFeQp0wodjuYPdw
https://www.banggood.com/CYCPLUS-2-in-1-150PSI-Hand-held-USB-Rechargeable-Automatic-Air-Inflator-for-All-Models-Bicycle-with-Schrader-Presta-Pressure-Monitor-LED-Emergency-Lighting-p-1126440.html?rmmds=category&utm_source=google&utm_medium=cpc_ods&utm_content=Eva&utm_campaign=nrm-ljj-cycl-577674-all&utm_design=75&gclid=CO32zeTSl9YCFeQp0wodjuYPdw