The CHERRY DW 9100 SLIM desktop set with AES-128 encryption can be recharged using the USB Type-C to USB Type-A cable and offers a choice of Bluetooth and 2.4 GHz wireless connectivity. High-quality workmanship and an excellent typing feel ensure a comfortable experience. Other highlights: - Rechargeable li-ion batteries (a single charge lasts for weeks) - LED status indicators for battery, charge and mouse resolution - Integrated metal plate for maximum stability - Magnetic support bar System requirements: - Bluetooth connection: Compatible devices with at least Bluetooth 4.0 (Low Energy) - USB connection: Available USB female (A), Windows 7, 8 or 10