? Bluetooth connection and wide compatibility: this Bluetooth wireless mouse adapts to Bluetooth, easy pairing and fast connection ? Silent mouse click: almost no button click. Enjoy the sound of silence. This quiet wireless mouse will reduce the noise by up to 90%, comfortable and quiet click, never make noise, do not disturb anyone. ? Rechargeable built-in battery: built-in lithium-ion battery, a sufficient 2-4 hours, can work 3-4 weeks. Sleep mode. Energy saving in case of power failure. ? 13 months refund: lifelong technical and service support. If you find this Bluetooth wireless mouse unsatisfactory, please contact us for solutions. ? After sales service: if you have any questions, please contact us