{"url":"https://secondhandmacbook.com/m/m4/15-inch/","facets":["m4","15-inch"],"label":"M4, 15-inch","definitions":{"m4":"chip_family = M4","15-inch":"size_in >= 15 and size_in < 16"},"count":1,"source":"manufacturer spec pages; null = not stated by the maker","listings":"coming soon","models":[{"model_id":"macbook-air-15-inch-m4-2025","model":"MacBook Air (15-inch, M4, 2025)","year":2025,"size_in":15.3,"chip":"M4","memory_max":"Up to 32GB","storage_gb_max":2048,"thunderbolt":"4","external_displays_max":2,"battery_wh":66.5,"source_urls":["https://support.apple.com/en-us/122210"],"url":"/models/macbook-air-15-inch-m4-2025/"}]}