Garmin Forerunner 55 Running GPS Smartwatch

Lens Material: Chemically strengthened glass
Quick Release Bands: (20 mm, Industry standard)
Strap Material: Silicone
Physical Size: 42 x 42 x 11.6 mm, Fits wrists with a circumference of 126-203 mm
Color Display: Yes
Display Size: 1.04" (26.3 mm) diameter
Display Resolution: 208 x 208 pixels
Display Type: Sunlight-visible, transflective memory-in-pixel (MIP)
Weight: 37 g
Battery Life: Smartwatch Mode: Up to 2 weeks, GPS mode: Up to 20 hours
Water Rating: 5 ATM
Memory/History: 200 hours of activity data