Because the 38mm is actually 38 6 mm tall and the 40 mm exactly 40mm tall.
													
																	Apple watch series 5 40mm vs 38mm. 
									
	
		
	
																	Apple watch series 5. 
																	The 40mm apple watch has a screen size that s slightly bigger than the 38mm apple watch series 3 but that s mainly because the display is so much larger. 
																	And if you are planning to save a little amount of cash better opt for smaller one. 
																	Smaller wrists will love this model as will your pocketbook. 
															
													
									
	
		
	
																	Likewise the 42mm is 42 5 mm tall and the 44 is exactly 44mm tall. 
																	Apple watch series 3. 
																	Remember too that all bands that worked with series 1 3 will correspond with the bigger smaller size of the series 4 or series 5. 
																	For all things apple watch. 
															
													
									
	
		
	
																	The size and resolution of the apple watch series 5 hasn t changed since the series 4. 
																	The apple watch se offers the choice of larger 44mm or 40mm compared to the 40mm or 38mm cases available for the series 3 both offer a retina display but the se is 30 larger 368 by 448 pixels. 
																	40mm 324 x 394 pixels and 44mm 368 x 448 pixels. 
																	So a 38mm series 2 band will fit the 40mm series 5. 
															
													
									
	
		
	
																	You get two options. 
																	From 279 at apple. 
																	Still both are sharper than the. 
																	You can buy apple watch 38mm for. 
															
													
									
	
		
	
																	I had a series 0 42 and thought i could get use to a 40 but had both on my wrist and yeah no way in hell are my fat fingers going to work a 40mm. 
																	The price of the 38mm series 3 apple watch was slashed to 199 half the price of the series 5 and one of the lowest priced smartwatches you re going to find oil either side of the aisle. 
																	249 for apple watch series 1.