Description

The JZK-302 Portable Fingertip Pulse Oximeter is a compact, lightweight, and convenient device designed for non-invasive spot checking of blood oxygen saturation (SpO₂) and pulse rate (PR) through the fingertip. Its simple clip-on design allows users to take measurements without needles or complicated procedures.

The JZK-302 uses an infrared measurement method and provides digital readings through its LED display. Its small size, low power consumption, automatic shut-off, and battery-powered operation make it suitable for everyday personal and family healthcare use. The model is manufactured by JZIKI/Shenzhen ZhengKang Technology in China.

Key Specifications

• Brand: JZIKI
• Model: JZK-302
• Product type: Portable fingertip pulse oximeter
• Measurement parameters: SpO₂ and pulse rate (PR)
• Measurement method: Infrared / photoelectric pulse oximetry
• SpO₂ display range: 35–100% on manufacturer specifications; some retail versions display 70–100%
• SpO₂ resolution: 1%
• SpO₂ accuracy: ±2% for 70–100% on the manufacturer’s documented specification
• Pulse-rate range: 30–250 BPM
• Pulse-rate resolution: 1 BPM
• Pulse-rate accuracy: ±2 BPM or ±2%, whichever is greater, on documented versions
• Display: LED
• Material: ABS plastic
• Power supply: 2 × AAA batteries
• Low-battery indicator: Yes
• Automatic power-off: Yes, when no signal is detected
• Dimensions: Approximately 58 × 32 × 33.5 mm on the manufacturer-listed version
• Net weight: Approximately 61.5 g on the manufacturer-listed version, although some retail versions list a lower device-only weight
• Colour: Blue; customized colours may also be available
• Intended use: Spot checking / personal and home healthcare

Key Benefits

Non-Invasive Measurement
The JZK-302 measures SpO₂ and pulse rate through the fingertip without blood sampling or needles, making routine spot checks simple and convenient.

Measures SpO₂ and Pulse Rate
The device provides two useful readings—blood oxygen saturation and pulse rate—on its digital display, allowing users to quickly review their measurements.

Easy Fingertip Operation
Simply place a finger inside the clip and follow the device instructions to obtain a reading. Its straightforward operation makes it suitable for everyday personal monitoring.

Clear LED Display
The LED display presents the measurement values clearly, making it easy to check the SpO₂ and pulse-rate readings.

Compact & Portable
The small fingertip design makes the JZK-302 convenient to keep at home, carry in a medical kit, or take while travelling. The manufacturer lists dimensions of approximately 58 × 32 × 33.5 mm for one JZK-302 version.

Low Power Consumption
The device is designed for low power consumption, helping extend battery use during routine measurements. Documented versions operate from 2 AAA batteries.

Low-Battery Indicator
A low-battery warning helps alert the user when the batteries need replacement, reducing the possibility of unexpectedly losing power during use.

Automatic Power-Off
The oximeter automatically switches off when no measurement signal is detected, helping conserve battery power. Some JZK-302 listings specify approximately 8 seconds without a signal.

Lightweight & Convenient
Its compact clip-style construction is designed for quick spot checks and convenient storage.

Suitable for Home Healthcare
The JZK-302 is marketed for family healthcare, outpatient care, ward monitoring, and personal spot checking.

How to Use

1. Insert 2 AAA batteries into the battery compartment.
2. Place a clean fingertip inside the oximeter clip.
3. Keep the finger still during measurement.
4. Turn on the device and wait for the reading to stabilize.
5. Read the SpO₂ and pulse-rate values from the display.
6. Remove the finger after measurement; the device will automatically switch off according to its programmed setting.

For more consistent readings, keep the hand relaxed and still during measurement. Nail polish, artificial nails, cold fingers, poor circulation, movement, and other factors can affect pulse-oximeter readings.

Important Note

The JZK-302 is intended for spot checking of SpO₂ and pulse rate, not for diagnosing medical conditions on its own. If an oxygen-saturation reading is unexpectedly low or accompanied by concerning symptoms, users should seek appropriate medical advice rather than relying solely on the device.

Specification note: Different JZK-302 production versions and retailers report slightly different display ranges, dimensions, weight, and accuracy specifications. The specifications above prioritize the manufacturer-listed JZK-302 information; the exact specifications and included accessories should be verified against the packaging of the particular unit being sold.