Calculate your way to the top of the class. Ideal for advanced high-school math and science classes.

Take your workout to the next level with Powerbeats~ Wireless earphones, featuring up to 12 hours of battery life to last through multiple workouts and secure-fit earhooks to maximize comfort and stability. With Fast Fuel, a 5-minute charge gives you 1 hour of playback. Sweat and water resistance provides trusted durability and dual-driver acoustics deliver dynamic sound to power your workout.

Expertly control the action in your favorite games with this PlayStation 4 DualShock 4 controller. A clickable touchpad and enhanced analog joysticks offer multiple ways to play, while the integrated light bar helps identify each player when gaming with friends. This PlayStation 4 DualShock 4 controller comes with a built-in speaker and audio jack, so you can choose the way you experience your in-game sound.

The Ghost of Tsushima Collector~s Edition includes the following content:-Game-Sakai Mask with Stand-Cloth Map-Sashimono (War Banner)-Furoshiki (Wrapping Cloth)-SteelBook Case-48-page Mini Art Book by Dark Horse-1 Technique Point*-Charm of Hachiman~s Favor*-Hero of Tsushima Skin Set*: Golden Mask, Body Armor, Sword Kit, Horse, Saddle-Director~s Commentary*: The creative team sits down with a renowned Japanese historian to look at the world of Ghost of Tsushima and how it compares to the real-life events that inspired it-Ghost of Tsushima Samurai Theme*In the late 13th century, the Mongol empire has laid waste to entire nations along their campaign to conquer the East. Tsushima Island is all that stands between mainland Japan and a massive Mongol invasion fleet led by the ruthless and cunning general, Khotun Khan. As the island burns in the wake of the first wave of the Mongol assault, samurai warrior Jin Sakai stands as one of the last surviving members of his clan. He is resolved to do whatever it takes, at any cost, to protect his people and reclaim his home. He must set aside the traditions that have shaped him as a warrior to forge a new path, the path of the Ghost, and wage an unconventional war for the freedom of Tsushima. -In War-Torn Tsushima, Ancient Beauty Endures: In this open-world action adventure, you~ll roam vast countrysides and expansive terrain to encounter rich characters, discover ancient landmarks, and uncover the hidden beauty of Tsushima.-The Rise of the Ghost: In his quest to reclaim Tsushima, Jin must seek support from old friends and new unlikely allies. He must break away from tradition, become a new kind of warrior, and protect what~s left of his home at all costs.-Mud, Blood, and Steel: Challenge opponents with your katana for an immersive samurai combat experience, master the bow to eliminate distant threats, and develop stealth tactics to disorient and ambush enemies with surprise attacks.* Redeem digital items by 12/31/2023. In-game items unlocked via story progression.