This is a useful smart watch from Apple. It's a lightweight model that doesn't weigh more than 37 g.
From Amazon
Apple Watch Series 5 (GPS + Cellular, 44mm) - Space Grey Aluminium Case with Black Sport Band (Renewed)
Buy Tec
Apple Watch Series 5 44mm | Space Grey
The Watch Hut
Apple Watch Series 5 GPS + Cellular, 44mm Gold Aluminium Case with Pink Sand Sport Band - S/M & M/L - LCD / Pink
Watch Shop
Apple Watch Series 5 GPS + Cellular, 44mm Gold Aluminium Case with Pink Sand Sport Band - LCD / Pink