13-inch MacBook Air (early 2015) review - Macworld UK
2015 MacBook Air and MacBook Pro Refresh: What's New
Review: The 2015 MacBook Air's once-trailblazing design is showing its age | Ars Technica
Battery Life & WiFi Performance - The 2015 MacBook Review
MacBook Pro 13" Retina (Early 2015) Battery – iFixit Store
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