Secondhand Longfian JAY-5 5L/min Oxygen Concentrator

Objective AI Report

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Report date: 06.01.2026

JAY-5 Oxygen Concentrator Analysis Report

Device Identification

The visuals show a medical device secured within its original cardboard box, supported by protective foam (styrofoam) packaging. Upon examining the documents and accessories on the device, it is clearly understood that the product is an oxygen concentrator.

Brand and Model

The “Quality Certificate” card found on the device’s packaging has been thoroughly analyzed. According to the information on this document:

• Product Name: Oxygen Concentrator
• Model: Under “Product Name” on the certificate, in the model field or description, the phrase JAY-5 is present, resembling a red stamp/handwritten format. As a result of the examination and external source verification, it has been confirmed that the JAY-5 model is one of the standard medical oxygen concentrator models known in the market.

Originality and Documentation

The product’s box contents, arrangement, and the accompanying “Quality Certificate” indicate that the product is an original factory-made item. The certificate bears a “QC PASS” stamp. Furthermore, the presence of a wet signature or special notes in red ink (such as date and serial number) on the document suggests that each device has undergone individual inspection.

Manufacturing Year and Date Information

The date information is clearly legible on the certificate card accompanying the product:

• Date: 19-12-2024

This date indicates the device’s last quality control or manufacturing date and shows that the device is a relatively new production.

Label Information and Technical Codes

Upon examining the labels on the device and packages, the following data has been identified:

• Serial No. / MZJ: Indicated as “58660215” in red pen on the certificate. (Evaluating the possibility of the first digit being “5” or “S” based on the graphic, “5” is more probable: 58660215).
• Cannula (Hose) Package Data: On the label of the hose set inside the transparent bag on the left, the inscription LOT: 2409120 is legible. Additionally, next to the expiry date symbol, the date 20291025 (October 25, 2029) is visible. This indicates a long shelf life for the consumable material.
• Device Side Label: The right panel of the device features usage warnings under the “CAUTION” heading. The panel also shows the presence of Timing +/- and Back Light function buttons.

Areas of Use

The JAY-5 Oxygen Concentrator is a medical device that takes ambient air, separates oxygen using molecular sieves, and delivers high-purity oxygen (93% ± 3%) to the patient. It is used in the following conditions:

• For oxygen therapy at home or in clinics for patients suffering from COPD, asthma, lung infections, or respiratory failure.
• For individuals requiring continuous or intermittent oxygen support.

Quantity Information

The parts identified within the box contents are as follows:

• 1 unit JAY-5 Oxygen Concentrator Main Unit
• 1 unit Transparent Nasal Oxygen Cannula (inside a bag)
• 1 set Spare Filters (Black sponge filters and 1 green/white felt filter, inside the “Quality Certificate” bag)
• 1 unit Electrical Power Cable (partially visible on the right side of the box)
• 1 unit User Manual / Warranty Booklet (partially visible booklet)

General Condition and State

The product is in ZERO condition. The device’s styrofoam (foams) have not been dislodged, the dust bags have not been opened, and the main unit is completely protected. There are no signs of use on the device or its accessories.

Physical Deformations

No scratches, breaks, cracks, color fading, or physical damage have been detected on the device’s body, panel, or parts inside the box in the visuals. The product is in factory-new condition.

Mechanical and Electronic Components

• Mechanical: The device casing appears sturdy. The filter sponges and other parts inside the box are not deformed.
• Electronic: The control panel on the side of the device is clean. Protective film or original coating is visible on the screen and keypad, with no signs of wear. Although the device’s operational status cannot be analyzed as it is in the box, its visual integrity is complete.

Battery Status

JAY-5 models are generally stationary oxygen concentrators that operate directly with mains electricity (AC). The thick black power cable visible on the right side in the visual also confirms that the device operates via an electrical connection. No internal battery is visible in the device, and batteries are typically not found in this type of device.

Accessories

The accessories appear complete. Particularly, the presentation of spare air inlet filters (black sponges) and the fine particle filter (green felt-like) in the same bag as the “Quality Certificate” indicates that maintenance parts are also delivered to the user. The oxygen cannula package is sealed, supporting “Sterile” or similar hygiene indications.

Existing Faults and Risks

Since the product is completely new and in its original packaging, no visually detectable faults or defects are present. No potential risks (such as crushed cables, oxidation, etc.) have been observed. The quality control date from December 2024 indicates that the internal seals and sieves (zeolite) of the device are fresh, making the likelihood of performance issues very low.