I received the Ultrahuman Ring Air for my teardown project. These fitness tracking rings have spiked in popularity in recents year due to it’s small concise design and accurate data tracking.

I have separated this teardown into two separate parts; the charging dock and the ring.

Charging Dock Teardown:

Before starting anything I analyzed the product and noticed that the bottom of the charging dock had some sort of adhesive pad. I peeled off this material to reveal screws. This begun my teardown process.

The tools for this step were simple. I just grabbed a screwdriver to loosen the screws and the rest of the charging dock came apart 🙂

I then moved on to the ring… which did not go as smoothly as the charging dock. After consulting teardown videos of the Ultrahuman Ring Air (credit: Becky Stern) I opted to begin by cutting through the rings exterior metal shell. This was a trial and error process, the successful technique I used (credit: Sophia Haase) is displayed in the following video.

Ring Teardown:

Has seen here, I had to use a clamp, a flat head screwdriver and a hammer to cut through the metal.

*I may have accidentally hit the lithium battery on my first attempt. YIKES.

Moving on to the interior of the ring, I did have to start by wedging in between the metal and the plastic coating to separate the two. Again I used the hammer, clamp and screwdriver.

Once apart I could clearly observe the components that were housed inside the plastic interior.

Knolling 🙂

Manufacturing Techniques for Ultrahuman Ring Air:

1. Titanium shell fabrication: Likely uses precision CNC machining or metal injection molding (MIM)
2. PCB manufacturing: Flex PCB technology for the main circuit board. Also it likely uses photolithography and etching processes
3. Sensor integration: Photodiode and LED array integration for heart rate sensing
4. Chip bonding: Wire bonding or flip-chip bonding for attaching semiconductor chips to the PCB
5. Encapsulation: Use of epoxy resin to protect and secure internal components
6. Battery integration: Custom-shaped battery to fit the ring form factor
7. Charging base manufacturing: Plastic molding for the base structure and integration of the charging circuitry and USB-C connector

Ultrahuman Ring Air Components and Functions:

Item #	Component	Function
21	Nordic NRF52840	Bluetooth Low Energy (BLE) System-on-Chip (SoC) – Handles wireless communication – May handle some main processing tasks
8	STM32G0	Microcontroller from STMicroelectronics – Likely handles sensor data processing, power management, and possibly user interface functions
7 and 20	Crystal oscillators	Provide accurate timing signals to microcontrollers and wireless chips – Ensure precise operation of digital systems and radio communication
24	Photodiode and LEDs	Used for heart rate sensing – LEDs (green and red) emit light into the skin – Photodiode detects reflected light for heart rate measurement
2	Wireless charging antenna	Enables inductive charging of the ring
19	Chip antenna	Facilitates Bluetooth communication
25	Battery	Provides power to the device
1	USB-C connector	Allows for charging and potentially data transfer

Design Features:

Overall I like the design of the Ultrahuman Ring Air. One design example that particularly stood out to me was the light in the charging dock which indicates the rings charging status.

Another design feature that I liked was that the company sends you a size kit so you can try on the ring before placing an order. I know this information wasn’t found during the teardown but I think it is a great aspect of the design to note.

Thank you!