Description The Topeak E-Booster Digital Mini is an electric pump that fits in your jersey pocket. Never deal with the truly tedious task of inflating your road tyres with a hand pump again! Simply set the pressure you want your tyres to be on the simple control panel and let the automatic pump inflate your tyres for you. It’s like carrying a tiny compressor in your pocket. With a clear display, a torch when you need to fix your tyres in the dark, and a hose for making it easier to attach the pump to your tube – life is just easier with an electronic pump. FEATURES Electronic bike pump Works with Presta, Schrader & Clik valves Inflates up to 120 PSI / 8 Bar Works on all tyres: road, MTB, gravel, ebike, scooter & Options for using PSI or Bar Built-in torch PRESSURE AND USABLE TIMES COMPARISON Tyre Size Pressure Avg inflation time Avg number of uses 700 x 25c 100 PSI 95 s 3 700 x 25c 80 PSI 60 s 5 700 x 28c 80 PSI 80 s 3 700 x 40c 40 PSI 50 s 6 700 x 50c 30 PSI 70 s 5 29 x 2.35″ 30 PSI 90 s 4 29 x 2.4″ 25 PSI 80 s 4 29 x 2.6″ 20 PSI 75 s 5 Note: These data are based on a minimum 5-minute interval between each use. Variations in ambient temperature may also affect usage time. Tyre capacity may vary even for tyres of the same labeled size. SPECS Compatible with Presta, Schrader & Clik Valves Accurate within 2 PSI 7.4V 500mAh battery USB-C rechargeable, approx. 45 minute charge time Dimensions: 5.4 x 3.2 x 7.2cms Weight: 120 g Supplied with zip-lock waterproof bag, fabric storage bag, and extender hose For TPU inner tubes with resin valves, be sure to use an extender hose to prevent the valve from overheating and melting. * If the tyre already has air pressure, please activate the inflation switch before connecting the valve. Check out Topeak’s user manual here