(Free shipping promotions do not apply to scales.) Quantum's top quality scales offer the following features: • Two Oversized Displays • Four lines, 20 large characters per line. Never seen on other scales in this price range. • Shows four individual wheel weights and total on one screen. Other screen displays percentages and cross weights in eight different modes, including circle track / road race and pounds / kilograms. • Five Year Limited Warranty. • RFI Filter • Another feature not available on comparably priced scales is an electronic filter to cancel radio frequency interference. • Built-In Battery Charge • Charges in four hours, then switches to trickle mode so you can leave it plugged in. " Low Battery" warning flashes on screen, charger has light. • 20' Cables • Tangle free, color coded and printed with scale pad location so the RF weight really is from the right front wheel. Attaches to pads with military spec meter connectors. • High Impact Case • Console is intergrated into a luggage quality case. • CNC Billet Aluminum Pads • The best of the best. 12' square by 2 1/2' pads carved from a solid plate of 1/2" aluminum. Rated 400 pounds per pad, 1600 pound total. The same 1/10 of 1% accuracy as our larger scale pads.