- Operation range: within 10 meters<br />- Features 81-Keys<br />- 2.4GHz wireless transmit<br />- Voltage: DC 2.2-3.6V<br />- Powered by 2 x AA batteries (included)<br />- USB receiver included<br /><br />                                                                                                                                Dimensions: 13.58 in x 6.42 in x 1.85 in (34.5 cm x 16.3 cm x 4.7 cm)<br />Weight: 18.48 oz (524 g)<br /><br />