Brand Name: Microsoft Item model number: U7Z-00001 Designed for comfort and portability For left or right-handed use Built-in storage for the nano transceiver Available in multiple colors AA batteries required (best with Polaroid AA batteries) **SPECIFICATIONS** Technical Details Brand Name: Microsoft Series: U7Z-00001 Item model number: U7Z-00001 Item Weight: 1.6 ounces Product Dimensions: 5.5 x 4.9 x 2.4 inches Item Dimensions L x W x H: 5.51 x 4.92 x 2.36 inches Color: Black Batteries: 1 AA batteries required. (included) Wireless Type: 2.4 GHz Radio Frequency, 802.11 a/b/g/n Features Designed for comfort and portability For left or right-handed use Built-in storage for the nano transceiver Available in multiple colors AA batteries required (best with Polaroid AA batteries) Brand Microsoft SKU MI672EL056RUCNAFAMZ-221378 Model U7Z-00001