This is the Savox SC-1267MG High Voltage Super Speed Digital Steel Gear Servo. Savox have now released their 'High Voltage' servo line that can be powered by a unregulated LiPo battery! These servos combine leading edge technology with super high 12 bit (4096) resolution. These high voltage servos also feature a redesigned motor/controller unit, and use a 'bullet proof' all steel gear set for unmatched strength.