Type: 3.8V Li-ion
Capacity: 155 mAh
Battery life: 2 years or up to 500 cycles
Charging time (0% to 100%): 90 minutes (worst
case)
Battery duration (100% to 0%): 1 to 2 days
(depends on the sensor configuration)
Type: Glass-protected E Ink display
Display size: 25.9 mm
Glass: Corning® Gorilla® Glass 3
Glass features: High resistance to scratch and
sharp contact damage; high retained strength
after use; superior surface quality
E Ink specifications: Black & White, always-on,
no backlight, 62 segments, 2Hz max refresh
rate
Display features: always-on clock face
(time-synchronized with companion
app/system), battery level (in percentage),
Bluetooth® connection/disconnection
indication, error states, menu navigation
Type: two mechanical buttons
Actions: menu navigation, confirmation, event
tagging