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Canadian powerhouse 4iiii Innovations just cut the weight of their crank arm-based power meter pod in half. The new PRECISION 3 power meter weighs in at a super-light 9g for the pod, blowing the already-light PRECISION Pro (25g for the pod) out of the water.
Being the lightest is fine, but it only matters if the data is correct and the product is easy to use. On paper, the new PRECISION 3 has all the same features as its predecessor and beefs up all categories.
How much battery life?
The new PRECISION 3 offers a staggering 800 hours of battery life (up from 100hrs), a more comprehensive cadence range, a broader temperature/storage temp range, and a slimmer design. This unit is a significant upgrade from the previous models from the stats alone.
One of the significant features of the 4iiii meters is their super slim design. The new meter takes the 7.5mm height (how much it sticks out from the factory crankset) and trims it down by 2mm to just 5.5mm— 40% thinner. This ease of clearance means adding a power meter to your Trek, BH, and other bikes with a tight crankarm/frame clearing could be a non-issue.
The PRECISION 3 power meter unit is available for 4iiii factory install on most alloy non-drive side cranks. There isn’t any explicit mention of a dual-sided meter, though we can only imagine this unit has a drive-side partner coming if not already available.
What about the internals
As for the inner workings of the 4iiii, PRECISION 3 boasts 8x more battery life, active temperature compensation, over-the-air firmware upgrades, and LED status indication for wake up (green), zero offset (blue), and low battery (red — which you won’t see for a very long time).
The same 3D Strain Gauge technology
The PRECISION 3 uses the same patented 3D Strain Gauge technology from the PRECISION Pro to achieve +/- 1% accuracy with a 3-year warranty, and a solid customer service team (we’ve called before).
The PRECISION 3 Powermeter is pre-installed as a ride-ready option on a left side Shimano crank, or you can also send in your crank for a custom 4iiii Factory Install. Both options start at $324.99.
Key Features — 4iiii PRECISION 3
- Up to 800 hours of battery life
- Patented 3d strain gauge technology to deliver +/- 1% accuracy
- Ultra-low profile and compatible with nearly all bike frames (looking at you, Trek)
- Designed and tested in the Candian Rockies against the harsh conditions
- One of the lightest power meters on the market today
- Product status indication LED light – for wake (green), zero offset (blue), and low battery (red)
- Active temperature compensation
- Over the air firmware and upgrades
- Coin cell-powered, CR2032
- Compatible with 3rd party training apps such as Zwift, Trainer Road, SYSTEM, and more
- 3-year warranty
- Price: $324.00
4iiii PRECISION 3 Specifications
Accuracy : +/- 1%
Battery type: CR2032
Battery life: up to 800 hours
Waterproof rating: IPx7
Cadence range: 30-170 RPM
Power Range: 0 – 4000W
Unit Length: 63.79mm
Unit width: 26.42mm
Operating Temperature: 0 to 50°C
Storage Temperature: 40 to 60°C
Communication Protocols: ANT+, Bluetooth
For more information check out: 4iiiii.com