Feature:1. 1. Touch plane, support horizontal and vertical scroll, left and right keys.2. 2. Comfortable to fit the natural curve of the hand.3. 3. Bluetooth 4.0 connection, lower power consumption, more stable performance and smoother use.4. 4. Bluetooth folding touch.5. 5. Ultrathin.Specification:Connection method: Bluetooth 4.0Wireless frequency: 2.4GHz frequency rangeWireless range: about 10 metersSize: 131.2 * 55 * 14.5mm/5.16 * 2.16 * 0.57inch (Approx.)Weight: 82.5g with batteryBattery: 2 AAA batteriesConnection with the computer: BluetoothApplicable models: Notebook computersPhotoelectric resolution: 1600 (dpi)Number of keys: 2 (keys)Interface: BluetoothAdjustable resolution: four gearsWheel direction: touch wheel.Package List:1 * Folding Bluetooth MouseNote:Photoelectric resolution: 1600 (dpi)Number of keys: 2 (keys)Interface: BluetoothAdjustable resolution: four gearsWheel direction: touch wheelPackage included:1 * Folding Bluetooth Mouse