Ellipticals USB: Accessible To Mobile Device, Available Foe Movie And Music Enjoyment Heart Rate Sensor: Intelligent Heart Rate Testing System Safe And Comfortable Android System: Beside Monitoring Heart Rate, Time And Movement Course, The 15.6 Inch Big Screen On Control Panel Are Also Available For Reading News & Emails ,watching Movies, Downloading Millions Of Programs Under Wifi Device On Control Panel: Equaled With One Lcd Display Board With High Resolution Drive System: V-ribbed Belt Device Power: External Power Supply 220v Built In 12v Voltage Transformers Resistance System: Electromagnetic Adjustment System Adopted, Resistance Can Be Controlled By Either Body Weight Or Heart Rate Main Frame: Strengthened Main Body, Firm Durable And Nice Looking Max User Weight:200kgs