Topeak SmartGauge D2

Topeak SmartGauge D2
Sold by amazon
Used By Both Professional And Amateur Riders Alike

PKR 9,000

Delivery within 1-4 working days
(No delivery charges, no customs and clearance charges)

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The SmartGauge bleeps when it has a steady reading (psi, bar or kg/cm2) and displays it for 25 seconds before auto-shutdown kicks in to save the battery. Long enough to read easily, then, but not long enough to check back if you subsequently forget. On the subject of battery life, I haven't seen it quoted anywhere but I would estimate the single CR2032 to be good for a few thousand measurements.