Trusted by:
Benefits
Who is the SPECK for?
Different people use light data in different ways. The SPECK is designed to support a range of applications.
Why track light exposure?
Light exposure is one of the most important drivers of sleep and circadian rhythms. The SPECK helps you see how your daily light exposure aligns with your goals.
· Track your light exposure across the day
· Identify patterns that may affect your sleep and energy
· Experiment with changes to your routine
Care & Aging ApplicationsSupport healthy light exposure for older adults
Light exposure plays a critical role in circadian health, especially in aging populations. The SPECK helps caregivers better understand and support daily light patterns.
· Monitor daytime and evening
light exposure
· Support environments that
promote healthy rhythms
· Enable data-informed care
approaches
ResearchersStudy light exposure in the real world
The SPECK enables continuous, wearable measurement of light exposure outside restrictive lab environments—supporting studies in circadian health, sleep, and human behavior.
· Deploy across participants in
real-world settings
· Capture high-resolution light
exposure data
· Access and analyze data for
research workflows
“The SPECK has motivated more behavior change and mindfulness about my surroundings than any other wearable I’ve used!”
Clinical Trial Participant
2024
How the SPECK Works
01
WEAR
Clip and wear the Speck throughout your day
02
MEASUREContinuously record light exposure in your environment
03
SYNCData is transmitted via app
04
ACCESSView and analyze your light exposure data
SPECK Connect iOS app
Why Light Exposure Matters
Light is a primary signal that regulates the body’s internal clock. However, most people—and most studies—lack continuous, real-world measurement of light exposure.
The Speck helps bridge that gap.
· Light influences sleep timing and quality
· Daily light patterns affect circadian
alignment
· Real-world exposure often differs from
ideal conditions
Specifications
What you get
· Speck wearable light
measurement device
· Data collection via free
mobile app
· Access to your light
exposure data
· Tools for exporting and
analyzing data
SPECK
Wearable
Spectral Channels
Angular Response
Battery Life
Charging
Data Storage
Connectivity
App Features
Data Access
Size
Weight
IP Rating
Weight
Performance
Spectral Power Distribution (SPD) between 400nm-750nm
Photopic Illuminance between 1-150,000 lux
Melanopic Equivalent Daylight Illuminance (mEDI) 1-150,000 lux
Circadian Stimulus (CS)
Correlated Color Temperature (CCT)
USB Charging
Cosine
7 days per charge
Wireless via included Qi charger
6 weeks of data storage at 1-min measurement interval
BLE to iOS app
Real-time measurements, Light Coach, Light History
via app or web-based data portal; data exportable
35mm x 54 mm x 10mm including its integrated clip
12 grams
IPX5 - Water resistant
Wearable Accuracy
Unprecedented measurement accuracy equivalent to traditional spectrometers, but wireless, networked and cost-effective.
Patented Design
With 4 foundational patents and trade secret AI-based calibration method, you can count on SPECK.
Networking
BLE and thread networking and cloud infrastructure for data ingestion.
Growing Database
Growing database of high quality, real-world light exposure patterns and health outcomes.
Built on Decades of Light and Circadian Research
The Speck is grounded in established principles of light measurement and circadian science, with a focus on capturing real-world exposure.
· Designed by experts in light
measurement
· Informed by circadian health research
· Developed for both research and
applied use
Frequently Asked Questions
Our Story
The SPECK was developed with funding from the National Institute on Aging to help people with Alzheimer’s disease and related dementias manage light exposure to improve sleep and circadian health. Clinical trials show users consistently follow SPECK guidance, leading to measurable sleep improvements. Researchers have also used the SPECK to study light exposure’s impact on cognitive and cardiovascular health, long COVID recovery, and circadian lighting in buildings, including a pilot with the General Services Administration. Now available to individual users, the SPECK supports wellness consumers and people with sleep or circadian rhythm disorders. It is designed in California and manufactured in Michigan.
Erik Page
Founder and CEO
Get started with the SPECK
Whether you’re conducting research or exploring your own light exposure, the Speck provides a new way to understand this critical aspect of health.
Order the SPECK
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