For redemption Scan QR Code at the pictureShop now: [https://bit.ly/3yytzNt / URL of their store] For more InfoMK545 ADVANCEDWireless Keyboard K545: 2 x AA alkaline batteries (pre-installed)Wireless Mouse M510: 2 x AA alkaline batteries (pre-installed)Battery weight: 24g / batteryKeyboard36-month k..