As professional coaches know, compared to simply measuring heart rate, which can easily be aﬀected by environmental factors or personal physiological conditions, using a power meter is the best way to gain metrics for training because the data given by direct force shows the real output from every pedal stroke.
Four built-in strain gauges and an accelerometer cross-calculate to accurately determine thepower of a pedal stroke and generate the left/right pedal balance in percentage, giving you information you need to keep your output equal.
PEDALING POWER PHASE METRICS
Pedaling power output phase metrics, given in chart form, help you ride more eﬃciently, telling you when to best apply power and saving you energy over the course of the ride.
LAB TESTED, FIELD PROVEN
Countless hours in the lab and on the course mean that the Power Halo's result accuracy in watts is +/-1.5% in all conditions, all the time.
STATE OF THE ART PROCESSORS & SENSORS
Applying cutting edge-spider based microprocessor technology to instantly calculate data and incorporating a minimum energy consuming accelerometer, the Power Halo oﬀers industry-leading battery life, up to 100 ride hours on a single charge.
Developed through data acquisition with professional and amateur racers in real worldriding conditions, this algorithm compensates for weather variances as well as competing digital noise from nearby devices which can cause inaccurate or inconsistent data.
SMART & INTUITIVE CONNECTION
Giant's RideLink app oﬀers easy ﬁrmware updates and calibration by connecting Power Halo to smart devices via Bluetooth and ANT+.
Built-in magnetic connector makes recharging fast and easy
Durable Casing: IPX7 waterproof, anti-dust casing protects the Power Halo under all conditions
107mm BCD for SRAM Force and Rival 4 bolt 1x or 2x chain rings
Color LED Indicators display connection status and battery status (Green >60% ; Yellow 30%~60% ; Red <30%)
Long Lasting Lithium Battery
High high-capacity lithium battery delivers up to 100 hours of riding on a single charge
Built-in Strain Guage
Detects the smallest flex and torque in the spider
ANT+ & Bluetooth BLE
Accelerometer provides instantaneous and super accurate dynamic pedaling angle and cadence information
Instantly calculate power data with minimum energy consumption, providing industry-leading battery life
If the light is off, make sure your Giant Power Halo and cycling computer are paired successfully. If they are paired but the light is off, the LED may be damaged. Please contact an authorized Giant retailer.
If your LED is blinking erratically, please contact an authorized Giant retailer.
The Power Halo hardware and software are designed to accurately measure the power values coming only from round chain rings. Oval rings are not compatible. Any modification of the original chain ring configuration will influence correct functionality of Power Halo and will void the warranty.
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