Apple watch series 6 vs series 4.
													
																	Apple watch series 4 vs 5. 
									
	
		
	
																	Apple watch also now comes in titanium. 
																	Is it worth the upgrade. 
																	Apple s latest smartwatch the apple watch series 5 is an almost perfect smartwatch and replaces the apple watch series 4 as one of the best smartwatches you can buy. 
																	By jackie dove september 15 2020 the apple watch series 5 is a genuine work of art and far ahead of the competition. 
															
													
									
	
		
	
																	When comparing series 6 and series 4 the list of differences is significantly longer. 
																	The back crystal of apple watch series 6 features four clusters of green red and infrared leds and four photodiodes used to measure blood oxygen levels with the blood oxygen app. 
																	Apple watch series 6 vs. 
																	Apple watch series 5 vs. 
															
													
									
	
		
	
																	The 40mm series 4 watch has a 324 x 394 resolution while the 44mm version of the series 4 brings you 368 x 448. 
																	Apple watch series 4 the biggest addition to series 5 is the always on display so you can check the time without a big arm movement. 
																	2 it has both an optical heart sensor for measuring your heart rate and heart rhythm and an electrical heart sensor that enables the ecg app. 
																	You get a processor two years newer s6 vs s4 new case colours the new. 
															
													
									
	
		
	
																	3 the digital crown provides haptic feedback when you turn it. 
																	Where form factor is concerned the series 5 also measures in at 10 7mm thick.