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PRECISION’s left side power meter leads the industry with its lightweight, compact design. At only 9 grams, this highly accurate and affordable crank-mounted bicycle power meter is with a new bike crank. With its proprietary strain gauge layup, PRECISION delivers real-time power output in watts, cadence data and is both ANT+ and Bluetooth Smart compatible. PRECISION also distinguishes itself with its easy to access coin cell battery and over-the-air upgrades via both iOS and Android.

  • Accurate, consistent wattage data (+/-1%) and cadence measurement
  • Lightweight, compact design
  • 9 grams for left side only pod
  • Tap to Pair for simple, assured pairing to phone (Patent pending)
  • Easily accessible 2032 coin cell battery
  • 100 + hours of battery life
  • User-friendly 4iiii app
  • Over-the-air upgradable for new features and updates
  • Compatible with ANT+ and Bluetooth Smart units
  • Battery status indicator (15% battery notification)
  • Smartphone compatibility
  • User configurable Rider Compensation Factor
  • Efficient setting of zero offset and calibration values
  • 4iiii product platform integration

Delivery Information

Hargroves Cycles offer Free Delivery for all orders over £9 with in Mainland UK (orders below £9 will be charged £1.99)

Bikes and Bulky items are sent via TNT Courier and smaller items are sent via Royal Mail 2nd Class Post.

Items over £50 are sent with Royal Mail 1st Class track able service which is emailed to the customer on the day of dispatch.
For full delivery details please see our Delivery Page

International Delivery

Hargroves Cycles delivery all across Europe. Goods are shipped from the UK and are subject to import duties where applicable

For further delivery, pricing and restriction information please view our International Shipping Page

Returns Information

We will happily exchange or refund any item purchased at Hargroves Cycles within 365 days, except gift vouchers and personalized products, except where faulty.

Returned goods must be unused and supplied with their original packaging, unless faulty.

For full details on our Returns procedure please visit out Returns Section.

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At 4iiii Innovations we develop technologies that improve sports performance and make the athlete’s world safer. Our products increase awareness and provide an uninterrupted and real-time flow of data needed to set a personal best or achieve a podium position. Our goal in everything we do is to eliminate distractions, increase focus and produce better results. We are engineers and innovators. We are also athletes designing better ways for other athletes to win.

We’re driven by our ‘Smarter. Faster. Safer.’ mantra to offer products that re-think data delivery. Through innovative technologies we offer simple and immediate display of what you need to know to raise your game. In everything we do, our goal is to become a seamless and essential part of your training and to provide the winning edge when it comes to competing.

  • 4iiii PRECISION Ultegra 6800 Power Crank