Apple Watch Sport, Space Grey Aluminum Case/Black Band, 42mm (Refurbished) This Certified Refurbished product is tested and certified to look and work like new. The refurbishing process includes functionality testing, basic cleaning, inspection, and repackaging. The resulting product includes all relevant accessories, comes with a minimum 90-day warranty, and may arrive in a generic box.Only sellers who meet a high performance bar may offer Certified Refurbished products on Amazon.com Sport Band with stainless steel pin; Digital Crown Gorgeous anodised aluminium case; Ion-X glass Heart rate sensor, accelerometer and gyroscope; Ambient light sensor Retina display with Force Touch; Composite back, Splash and Water resistant in rain, exercising, etc (but not to be submerged in water, as it's not waterproof!)