Noise ColorFit Pro 4 Advanced Bluetooth Calling Smart Watch with 1.72" TruView Display, Fully-Functional Digital Crown, 311 PPI, 60Hz Refresh Rate, 500 NITS Brightness (Teal Blue) REFURBISHED it enhances the oxygen level

it enhances the oxygen level in purified water and maintain hygiene in water tank

Virtually eliminate the hassle of replacing batteries

The best BT calling experience

And Raindrops And Is Sweat Proof Too

Noise ColorFit Pro 4 Advanced Bluetooth Calling Smart Watch with 1.72" TruView Display, Fully-Functional Digital Crown, 311 PPI, 60Hz Refresh Rate, 500 NITS Brightness (Teal Blue) REFURBISHED it enhances the oxygen levelFeatures Advanced Bluetooth calling: Upgrade to an effortless calling experience attend reject calls and dial numbers, from your wrist.; Digital crown: Navigate through the watch, adjust volume and change the watch face via the fully functional crown. 1. 72display: ColorFit Pro 4 features 1. 72 TFT LCD with 25% more screen area than ColorFit Pro 3.; Vivid clarity: View information under the brightest sun, thanks to 311 PPI and 500 nits of brightness.