Available in White, Navy, Green, Blue and Pink for $29.99, the Protective Cover+ goes over the sides and the back of the Samsung Galaxy S4 and protects the phone from drops, bumps, scratches. It also gives users a better grip for the device. Perhaps the most important accessory is the Spare Battery Charging System which makes sure that Samsung Galaxy S4 users always have a freshly charged battery available. An LED light lets you know when the 2600mAh spare battery (included) is charged and ready to go. The price you pay to always have a charged battery ready is $49.99 which includes the compact charger.
With the AllShare Cast Wireless Hub, users can share content wirelessly to an HDMI or HDTV display. While you're viewing the action on the large screens, you are controlling the action from your phone or tablet. The accessory, priced at $99.99, works on the Samsung Galaxy S4, Samsung Galaxy S III, Samsung Galaxy Note 8.0, Samsung Galaxy Note 10.1 and the Samsung GALAXY Note II.
Other accessories offered by Samsung include the $79.99 9000mAh battery pack that charges a smartphone 3 times and a tablet once. The Samsung Galaxy Muse, at $49.99 is a portable music player that syncs music directly form your Samsung Galaxy S4. Samsung has a whole ecosystem for its new flagship Android model, designed to enhance your enjoyment of the phone.
source: Samsung via Droid-Life