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Compact electric-blue fingertip pulse oximeter with coloured LED display, lanyard attached

Tronsmart

Tronsmart ZK-302 Blood Pressure Monitor Blue

SKU CH-BWKH-GF64Y MPN ZK-302

A compact fingertip pulse oximeter with a coloured LED display measuring oxygen saturation from 35 to 100 per cent and pulse rate up to 250 bpm, running 30 hours on two AAA batteries and weighing 69 g

  • Variantno Bluetooth
  • Product colorElectric Blue
  • Simple one-button operation for quick spot checks
  • Coloured LED display shows SpO₂ 35-100 % and pulse 30-250 bpm
  • Compact 5.8 x 3.0 x 3.0 cm design weighs just 69 g
  • Up to 30 hours continuous use from two AAA batteries
  • Auto power-off after 8 seconds with no signal saves energy

Portable fingertip oximeter

The Tronsmart ZK-302 is a compact fingertip pulse oximeter designed for spot-checking blood oxygen saturation and heart rate. Its single-button operation and lightweight 69 g body make it simple for anyone to carry and use at home, during travel or after exercise.

Low power draw and quiet operation

The device runs on two AAA alkaline batteries (not included) and draws less than 30 mA, providing up to 30 hours of continuous measurement. An automatic shut-down activates after eight seconds without a signal, and a low-voltage indicator alerts you when fresh batteries are needed.

Clinical-grade SpO₂ accuracy

The coloured LED display shows oxygen saturation from 35 % to 100 % with 1 % resolution and 2 % accuracy across the 70 %–99 % range, while heart-rate measurement covers 30–250 bpm with 2 bpm accuracy and reliable performance at 0.3 % perfusion.

How it compares

Measured against everything we stock in Blood Pressure Cuffs & BP Monitors, at today’s prices. Recalculated every night.

Price $11.99
Cheaper than about 96% of the 211 comparable items (median $39.99).

Specifications

Product
Product colorElectric Blue
More details
Variantno Bluetooth

Questions about this item

How do I start a reading on the ZK-302 finger oximeter?

Insert two AAA batteries, place a fingertip fully inside the sensor, then press the single button once; the coloured LED display shows SpO₂ and pulse rate within seconds.

What ongoing upkeep does the ZK-302 require?

Replace the two AAA alkaline batteries after roughly 30 hours of measurements; the low-voltage indicator appears on screen when power is running low.

At what oxygen-saturation level does the ZK-302 stop giving reliable readings?

Accuracy is specified as ±2 % between 70 % and 99 % SpO₂; below 70 % the stated tolerance no longer applies.

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