Look Power Meters
Look power meters represent what happens when the inventors of the clipless pedal sit down with the pioneers of cycling power measurement. The result is the Look Exakt - a pedal-based system that houses Look's proven carbon pedal bodies around SRM's benchmark strain gauge technology. The appeal is straightforward: one set of pedals carries your wattage data between your summer race bike and your winter workhorse without recalibrating a crank or re-torquing a spider. Swap bikes, clip in, ride.
The Exakt delivers dual-sided power measurement, torque effectiveness, and pedal smoothness metrics - the kind of data that tells you not just how hard you're pushing, but how well you're pushing. Whether you're pacing a local ten-mile time trial or grinding up a brutal Pennine climb, that granularity matters. The carbon pedal body keeps weight honest, while the steel spindle handles the kind of repeated stress that road riding demands day after day. Dual ANT+ and Bluetooth Smart (BLE) broadcasting means your Garmin, Wahoo, and Zwift can all talk to these pedals simultaneously. IPX7 waterproofing means British winter road spray is somebody else's problem.
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Connectivity and the Tech Ecosystem
Look Exakt pedals broadcast simultaneously over both ANT+ and Bluetooth Smart (BLE), which sounds like a detail until you're mid-interval on Zwift and your Garmin is logging the same session without any faffing. That dual broadcasting means your head unit and your training software pull live wattage at the same time - no choosing one over the other. Pair it to a Garmin head unit via ANT+ for clean, low-latency data on the road, and let BLE handle the Zwift or TrainerRoad connection on the turbo. It all runs in parallel.
The SRM Exakt app handles firmware updates and gives you a clean interface for initial installation checks and zero-offset calibration. It's worth running through the app setup before your first ride rather than relying purely on the head unit - the app surfaces diagnostic detail that a cycling computer won't show you. If you're considering alternatives, Favero power meters and Wahoo power meters offer similar dual-protocol broadcasting, but neither brings the SRM strain gauge integration that underpins the Exakt's accuracy claims.
Battery Life and Choosing Your Sided Option
Look claims 100 hours of ride time from the rechargeable lithium-ion battery, charged via a proprietary magnetic USB connector. In warm conditions, that figure is credible. Come January, riding in single-figure temperatures through the Dales or across the South Downs, expect something closer to 80 hours. Lithium-ion cells lose capacity in the cold - it's physics, not a flaw - so build a charging habit around weekly top-ups rather than running to the limit and hoping for the best. The magnetic charging port also needs keeping clean; road grit and salt can compromise the connection, so a quick wipe after wet rides saves you the frustration of a failed charge.
The model range splits into single-sided and dual-sided options. Single-sided measures left-leg power only and doubles the figure to estimate total output. It's cheaper, the battery math is simpler, and for many riders it's perfectly adequate for pacing and load management. Dual-sided is the more complete picture - it measures both legs independently, which means you get genuine left/right balance data. That matters if you're coming back from an injury, chasing a bike fit, or simply curious whether your left leg is doing its fair share. It usually isn't. If budget allows, dual-sided is the more useful tool long-term.
Fitting, Alignment, and Surviving UK Conditions
Installation is more involved than screwing in a standard pedal. The Look Exakt spindle needs precise alignment using the provided installation tool to ensure the strain gauges are correctly positioned - get that wrong and your accuracy suffers before you've turned a crank. Take your time with it. The Look cleat system carries over from the standard Keo range, so if you're already riding Look pedals, your existing cleat setup and float preferences transfer directly. Q-factor stays consistent with standard Look pedals too, which keeps the fit familiar.
The IPX7 waterproof rating means the pedal body can handle immersion up to one metre for thirty minutes - more than enough for the kind of road spray and standing water you'll encounter on a wet October ride in the Forest of Dean or commuting through Glasgow in November. That said, IPX7 isn't a licence to ignore maintenance. Clean the charging port regularly, keep an eye on the spindle threads after salt exposure, and torque the pedals correctly on installation. Good habits here keep the accuracy dialled over time.
Need replacement charging cables, end caps, or specific installation tools for your setup? Head over to our dedicated Look Power Meter Spares page to keep your pedals running smoothly.
Look Power Meters FAQs
How do you calibrate a Look power meter?
Before every ride, perform a zero-offset calibration via your cycling computer or the SRM Exakt app. Make sure the bike is upright, the pedals are completely unloaded, and the crank arms sit in the vertical 6 and 12 o'clock position. It takes about ten seconds and keeps your wattage readings honest.
How long does the battery last on Look Exakt pedals?
Look rates the rechargeable lithium-ion battery at up to 100 hours per charge. In mild conditions that's realistic. During cold UK winters, lithium-ion drain means you're more likely looking at around 80 hours. Weekly charging rather than running it to empty is the sensible approach.
Are Look power meters compatible with Garmin?
Yes. Look Exakt pedals broadcast over both ANT+ and Bluetooth Smart (BLE) simultaneously, so they pair cleanly with Garmin, Wahoo, Hammerhead, and most other modern cycling computers. You can also run a BLE connection to Zwift or TrainerRoad at the same time as your head unit without any conflict.