Check the listing for details. NEW--Logitech (C-U0012) UNIFY NANO USB Receiver for Logitech Keyboard & Mouse. Condition: New. Listed at 12.99 USD. Condition: Brand New (OEM Package)MPN: C-U0012Warranty: 1-YearYou are looking on a Brand NEW Logitech UNIFY Dongle NANO USB Receiver.Compatible with: Logitech wireless mouse M505 Marathon Mouse M705 Logitech Mouse M905 Logitech keyboard K340 Logitech keyboard K350 Wireless Number Pad N305 Logitech® Wireless Desktop MK710 Logitech® Wireless Keyboard K320 Logitech® Notebook Kit MK605 Logitech mouse M215 Also:Works with Mouse MX M905 M950 M505 M510 M525 M305 M310 M315 M325 M345 M705 M215 M185When you receive the new receiver, you must pair the new receiver to your mouse or keyboard.Package Content:Logitech Unifying NANO USB ReceiverShipping and Handling:US 48-States, AK, HI, APO/FPO, VI, GU & PR: FREE.Canada: $1.95 ea.International: $4.95 ea.Return Policy:We take care of 1-year warranty unless specify above. 14-days money back guarantee (less shipping fee). Buyer must send the item back for replacement or refund.