Square 1.3-inch 240×240 IPS capacitive touch display
Software: Any open-source operating systems built on top of numerous RTOSes
SoC: Low-power Nordic Semiconductor nRF52832
64 MHz + Floating Point
4 MB of User Storage
0.5 MB of OS Storage
Bluetooth 5 and Bluetooth Low Energy
Compatible with almost any device
Over-the-air update
Health Tracking
Step Counting (with Accelerometer)
Heart Rate Detection
Notification access
Wrist vibration
Quick glance via lift-to-wake.
All-week 180 mAh battery
2-pin USB charging dock
Solid build
Dimensions: 37.5mm x 40mm x 11mm
Weight: 38 grams
Made with Zinc Alloy and Plastic
Dustproof and water-resistant up to 1m (Rated at IP67)

27$