Galaxy Watch9 , AMOLED , 3.3 cm (1.3") , Display type Digital , Display resolution 438 x 438 pixels , Touchscreen Yes , RAM capacity 2 MB , Shape Round , Market positioning Smartwatch , Watch case size 40 mm , Watch case colour Graphite , Watch case material Aluminium , Band colour Graphite , Heart rate monitor Yes , Near Field Communication (NFC) Yes , Wi-Fi Yes , Bluetooth version 6.0 , Battery type Built-in battery , Weight 31.5 g