Package includes1 * keyboard1 * instruction manualProduct featuresPanel material: environmental protection plasticWorking voltage: 5VWorking current: < 20mANumber of keys: 79Interface type: USB interfaceTransmission distance: 10MSupport system; Win / XP / Mac, etcProduct size; 289*140*20mmcharacteristic:Small and light, easy to carryFrosted panel without fingerprintsAdjustable bracket to meet different use anglesOrigin: China