FDA 510(k) Cleared · K251574
Sleep & Fatigue Assessment Instrument

Real-time sleep and fatigue assessment — now on an integrated actigraphy platform.

Up to 2 wks Battery Life on WiFi Sync
6-axis Motion Sensor
510(k) FDA ClearedK251574
The Excellence of a Motionlogger® — now continuous and cloud-connected.
AMI Sleep Watch® on a black silicone band
Why teams choose Sleep Watch®

Motionlogger®, re-engineered for modern analysis.

Why standardize on the AMI Sleep Watch?

Validated actigraphy heritage.
Built on AMI's validated actigraphy heritage and the scoring continuity the Motionlogger® is known for.
Multi-sensor signal capture.
6-axis IMU, multi-wavelength PPG, temperature, and ambient/blue-light channels in one wrist-worn device.
Real-time, continuous-first.
Live, firmware-prioritized signal capture through the integrated actigraphy platform.
Built-in study tools.
On-device PVT, programmable questionnaires, event marking, and automatic off-wrist detection.
More than a device — a real-time research platform.

Sleep Watch® is now end-to-end: secure real-time sync, study and device-fleet management, and structured data you can pull through a REST API — with raw-data provenance and full continuity with existing Action4/AW2 workflows.

Try Sleep Watch on the AMI Cloud→

Built for research workflows

From wrist to analysis, without the desktop bottleneck.

01
Study-scoped data access.
Organize by organization, study, and subject; assign devices, manage questionnaires and diaries, and keep every study's data segregated.
02
Programmatic access.
REST API with scoped, OAuth-based partner keys. Pull structured actigraphy and sensor records plus daily and weekly summaries.
03
Protocol support.
Configure protocol windows and recurring summaries to match your assessment design.
04
Fleet at scale.
Register, assign, and track devices across sites, with device status, transfers, and OTA firmware managed from one portal.
Continuity and deployment that fit your environment

Deploy where your data is required to live.

One platform, four deployment shapes — from fully managed cloud to fully air-gapped.

AMI Cloud
Fully managed. Minimal IT overhead. Ideal for multi-site research trials.
Sovereign Cloud
Your cloud. Data-residency and PHI / HIPAA requirements satisfied.
On-Premises
Air-gapped & GovCloud-ready for federal and defense environments.
Local Agent *
Workstation sync agent. Action4/AW2 continuity, no cloud required.

* Coming soon

Workflow continuity.
Existing Action4/AW2 workflows preserved; native .ami bridge path and report continuity.
Deployment options.
AMI Cloud, sovereign cloud, on-prem/air-gapped, or local workstation sync agent.
Enterprise posture.
Secure BLE/Wi-Fi sync, tenant isolation, auditability, and observable transfer status.
Technical specifications

Medical-grade hardware, documented in full.

Design & Build
Form factor
Wrist-worn, smartwatch-style medical device · IP67 water resistance
Dimensions / Weight
48.5 × 40.5 × 13.5 mm (H × W × D) · 46.5 g · 150–235 mm wrist circumference
Materials
Plastic case; medical-grade silicone strap; stainless-steel (304) buckle
Display
TFT LCD color touchscreen, 368 × 448 px, up to 880 nits peak brightness
Controls & feedback
Digital crown and side button; vibration motor and audible buzzer
Sensors & Measurement Channels
Motion (IMU)
Solid-state 6-axis IMU — triaxial accelerometer + triaxial gyroscope
Optical (PPG)
Multi-wavelength: Green ~530 nm, Red ~655 nm, IR ~940 nm · ±60° wide-angle · independently driven
Temperature
Integrated channel; operating range -10 to +50 °C
Sampling
50 Hz sampling · 25 Hz Nyquist bandwidth
Ambient / blue light
Photodiode ALS; RGB + IR outputs; ~400–1000 nm; <1 to >100,000 lux
Storage & Connectivity
Storage
4 GB non-volatile memory
Wireless
Bluetooth® 5.1 · 2.4 GHz Wi-Fi 802.11 b/g/n · No physical connection interface required
Companion apps
iOS and Android
Power & Battery Life
Light / temp / sleep
Up to 33 days
6-axis motion
Up to 15 days
Continuous PPG
Up to 6 days
All-sensor capture
Up to 5 days · ~80% charge in ~70 min; full charge in ~90 min
FDA 510(k) Cleared · K251574

See the platform in action.

Request a demo or study consultation and we'll walk your team through device, portal, and data pipeline — mapped to your protocol.

Email us to request a demo: info@ambulatory-monitoring.com
The Excellence of a Motionlogger® — now real-time and cloud-connected.