The days of CO2 cartridges are officially over. The SILCA Elettrico MICRO packs the power of 4+ CO2 cartridges in a package about the size of an AirPods case. With auto-cutoff at 72 psi (no gauge), it's safe for use with hookless rims. A single 25-minute charge provides enough power to last for months, ensuring it always has your back. The Elettrico Micro is THE on-bike inflation solution.