Samsung book4 pro 360 14 inch July 8, 2019 16 32 64 128 Samsung book pro 360 14 inch Samsung galaxy book4 pro 360 14 inch Samsung book 4 360 14 inch Samsung book 1 pro 360 Samsung book pro 360 13 inch unboxing Samsung galaxy book 360 pro unboxing Samsung galaxy book pro 360 unboxing and review Samsung galaxy book pro 360 15.6 review