You must focus on pressure capacity (PSI/Bar), valve compatibility, and material durability. Ensure the pump supports both Presta and Schrader valves, ideally through a clever-valve head or a reversible internal adapter. For road bike markets, a high-pressure capacity of at least 100-120 PSI is essential, while MTB-focused pumps should prioritize high-volume air delivery. Material-wise, CNC-machined aluminum alloy offers the best balance of weight and heat dissipation compared to reinforced plastics.