Programming your servos has never been easier? or so affordable. The HFP-25 Digital Servo Field Programmer and Tester. With its lightweight, streamlined case and rechargeable NiMH battery pack, is a must have for all hobbyists looking to program Hitec's HS-5XXX and HS-7XXX series of servos. The easy-to-read LCD screen, low battery warning and both manual and automatic testing capabilities make this programmer their best ever.