Z40 Pro , 4.7 cm (1.85") , TFT , Display type Digital , Display resolution 280 x 320 pixels , Touchscreen Yes , RAM capacity 512 MB , Flash memory 0.256 GB , Band material Silicone , Band size One Size , Shape Rectangular , Market positioning Smartwatch , Watch case size 40 mm , Watch case colour Pink/White , Watch case material Plastic , Band colour Pink , Wi-Fi Yes , Battery type Built-in battery , Weight 52 g