Philips 3000 series All-in-One Trimmer MG3939/50 13 in 1 trimmer, Black, 0.354" (9 mm), 0.63" (1.6 cm), Universal, Metal, Charging Philips 3000 series All-in-One Trimmer MG3939/50 13 in 1 trimmer. Product color: Black, Minimum hair length: 0.354" (9 mm), Maximum hair length: 0.63" (1.6 cm). LED indicators: Charging. Power source: Battery, Operating time: 60 min, Battery type: Built-in battery. Warranty period: 5 year(s)