Philips Shaver series 500 S520/12, Rotation shaver, Black, Silver, SH30, 2 year(s), Battery, Nickel-Metal Hydride (NiMH) Philips Shaver series 500 S520/12. Shaver system: Rotation shaver, Product color: Black, Silver, Shaving head replacement(s) model: SH30. Power source: Battery, Battery technology: Nickel-Metal Hydride (NiMH), Battery life (max): 25 h