For optimal charging, use the cable provided to connect to a USB-C to C charging cable with a power output of 20W; Recommended to use with official or ESR magnetic cases. Compatibility: only for iPhone 16/15/14/13/12 series, Samsung Galaxy S25 Ultra/S25 +/S25 with a magnetic case. Not compatible with Motorola, OnePlus and Google phones Qi2 Certified Fast Charging: officially Qi2-certified 15W MagSafe charging and CryoBoost phone-cooling tech combine to ensure safer, more reliable charging at faster speeds Stay Cooler: CryoBoost phone-cooling fan and innovative heat-dissipating components keep your phone cooler during charging, maintaining maximum charging speeds Strong Magnetic Lock: powerful ring of magnets with 1,600 g of holding force keeps your phone securely in place, even on bumpy roads; an official MagSafe case or ESR magnetic case is recommended for rough terrain Mount Your Way: choose to mount on your cars air vent or dashboard; strong vent mount and high-quality ad