This charger Compatible, fits 1st and 2nd gen Wayfarer, Skyler, Headliner, and Oakley Meta HSTN styles. It features a safety chip to prevent overvoltage, overheating, and short circuits. The charger has a weighted base, spring-loaded arms, and an LED indicator for stability and status. Price drops from $39.99 to $21.99. Shipping is free with Prime or adds $6.