Hitec/RCD brand Hitec HS-5646WP Waterproof High Torque, High Voltage Servo. FEATURES: Industry first true water proof digital servo (IP67 Industrial Standard Approved) Ideal for boats, 1/8 and 1/10 scale cars 7.4V 2-cell LiPo and 6-cell NiMH compatible Ball bearing equipped metal gears Programmable digital amplifier with MOSFET drive YOU WILL RECEIVE: HS-5646WP Servo, 1.8 (45mm) Round Horn, 2.3 (57.5mm) Double Arm Horn, 1.6 (42mm) Four-Point Horn, 1 (26mm) Single Arm Horn and Mounting Hardware SPECS: Size: 1.65 x 0.83 x 1.57 (41.8 x 21 x 40mm) Weight: 2.15oz (61g) 6.0V 7.4V Speed: 0.2sec/60° 0.18sec/60° Torque: 156.92oz.in (11.3kg.cm) 179.14oz.in (12.9kg.cm) jxs 12/14/11 ir/jxs