Elevate your training with the 4iiii Precision 3.0+ Power Meter, purpose-built for Shimano 105 R7100 cranksets. Designed to help cyclists maximise their performance, this left-side power meter delivers industry-leading ±1% accuracy, enhanced terrain-adaptive measurement, and dual Bluetooth/ANT+ connectivity. Whether you're chasing KOMs, racing crits, or pushing FTP goals on indoor platforms, the Precision 3.0+ delivers consistent, reliable power data every ride.
At just 9 grams of added weight, the Precision 3.0+ is discreet yet powerful, offering up to 800 hours of battery life on a single CR2032 coin cell. Its compact design doesn’t interfere with your bike’s aesthetics or ride feel, and it’s IPX7 waterproof, ready for rain, sweat, and grit. The unit also tracks real-time watts, cadence, and calorie burn, making it your go-to data tool for efficient, focused training.
What truly sets this power meter apart is its Apple Find My integration. You can track your 4iiii device anytime via iPhone, iPad, or Mac—even when it’s not active. With wireless firmware updates, an intuitive setup via the 4iiii app, and a 3-year manufacturer’s warranty, the Precision 3.0+ is an essential upgrade for serious road cyclists and performance enthusiasts alike.
Key Features
- Crank Compatibility: Shimano 105 R7100 series (left-side crank arm)
- Accuracy: ±1% – ideal for precise power-based training
- Battery Life: Up to 800 hours (CR2032 coin cell)
- Connectivity: Dual-band ANT+ and Bluetooth Smart
- Data Tracked: Power (watts), cadence, and calories
- Apple Find My: Integrated tracking when the device isn’t in use
- Automatic Terrain Selector: Ensures accuracy across varied terrain
- Durability: Waterproof to IPX7 rating
- Minimal Weight Gain: Adds only ~9g
- Warranty: 3-year manufacturer warranty
- Firmware Updates: Wireless via the 4iiii mobile app
Welcome to North Sports! We are delighted to offer free UK delivery for orders over £50.
When a purchase is complete tracking information will be sent to you, if available, at the earliest.
Delivery Courier Services
Your delivery will usually be carried out through the distributor's own courier service. This is to help speed up deliveries for our customers.
Deliveries are Monday-Friday and the courier might be able to deliver on Saturday's for an additional cost.
Our ordering team will always request the courier contacts you on the day of delivery to advise they're on route but please note the driver contacting you is not guaranteed and we only request that this happens.
Pre-Assembled Ready To Ride Delivery
Throughout the website there are selected products with the product option to have pre-assembly for an additional cost.
Next Day Delivery
Next Day delivery is subject to availability. Please contact us prior via email for us to confirm if this option is available.
Returns
If you've changed your mind about keeping your purchase please email returns@northsports.co.uk, within 14 days from receipt of delivery ensuring you quote your order number. Want to know more? Please visit our full returns page here.
