TCELL USB3.0 High speed TC041 Auto retractable (Award Winning design) 128GB USB Flash Drive White, up to 30MB/s Honored by iF design award, Push & pull design under patent protection Capless, Retractable Design , risk free of losing cap USB connector returned automatically by pulled from the device USB3.0 Interface,Speed:Write up to 30MB/per sec. All TCELL USB Flash Drive/ Memory Cards are covered by 5-year warranty.