Surface Laptop 4 review: Microsoft returns to form with a solid notebook Microsoft's Surface Laptops have delivered once again. Credit: Microsoft Surface Laptop 4 Microsoft’s Surface Laptop 4 has significantly improved where it matters—in performance and in battery life. Even though it’s largely unchanged otherwise compared to the Surface Laptop 3 (and available in the same 13.5-inch and 15-inch sizes), that’s not a bad thing given the product line’s tradition of offering a great screen, a great keyboard, and great battery life. Microsoft has hit its mark on all three criteria once again, and the important changes under the hood make all the difference.