(Certified REFURBISHED) Asus Zenfone Max Pro M1 ZB601KL-4A005IN (Black, 6GB RAM, 64GB Storage) Certified Refurbished products on Amazon Renewed have been tested to work and look like new by a qualified manufacturer or a specialized third-party refurbisher. The products are refurbished in India and the refurbishment process typically includes a full diagnostic test, replacement of any defective parts, a thorough cleaning and inspection process, and repackaging. The product comes with relevant accessories (Except headphone and case) and is backed by a minimum six month supplier-backed warranty