properties- Wireless five-button mouse- 24GHz wireless technology for a range of up to 8m- maximum precision 1600dpi optical sensor- dpi switch for rapid toggling between the three sensor-resolution settings- quick and easy installation – no additional drivers needed- up to 90 quieter- ergonomic shape designed to fit your right hand perfectly- rubber coating for a great feel- non-slip rubberised button-function scroll wheel- compact nano USB receiver and practical storage compartment- automatic stand-by mode for maximum battery life- dimensions 106 × 73 × 36mm (length × width × height)- batteries included (2xAAA)DescriptionThe wireless CALADO Silent Mouse lets you work in whisper-quiet comfort at your PC so you can keep calm in the hectic office environment The advanced button technology effectively eliminates the noise you make when using the mouse clicks are almost silent and those around you will no longer feel disturbed as it’s up to 90 quieter than a standard mouse Thanks to its nice and compact shape combined with its premium non-slip rubber coating the CALADO Silent Mouse is designed to fit the shape of your right hand perfectly – all while offering precise and fluid tracking thanks to its sensor resolution of up to 1600dpi What’s more its robust wireless technology offers you up to 8m of wireless freedomInput deviceButtons type Pressed buttonsPurpose OfficeRecommended usage UniversalScroll YesMovement resolution 1600 DPIScroll type WheelNumber of scroll wheels 1Frequency band 24Buttons quantity 5Device interface RF WirelessPorts & interfacesWireless range 8 mFrequency band 24DesignWireless receiver interface USBColour of product BlackReceiver type NanoReceiverWireless receiver interface USBReceiver type NanoTechnical detailsColour of product BlackRubber grips YesNumber of scroll wheels 1ErgonomicsWireless range 8 mRubber grips YesPowerPower source BatteriesNumber of batteries supported 2Auto power off YesBattery type AAAPackaging contentReceiver included YesBatteries included YesWeight & dimensionsWidth 73 cmDepth 106 cmHeight 36 cmPackaging dataReceiver included YesBatteries included YesPackage type Blister