Philips HQ7740, Rotation shaver, Blue, AC/Battery, Nickel-Metal Hydride (NiMH), 100 - 240 V, Wireless Philips HQ7740. Shaver system: Rotation shaver, Product colour: Blue. Power source: AC/Battery, Battery technology: Nickel-Metal Hydride (NiMH), Power requirements: 100 - 240 V. Connectivity technology: Wireless, Cordless operation: 45 min