Philips BEARDTRIMMER Series 7000 QT4050/15, Black, Blue Philips BEARDTRIMMER Series 7000 QT4050/15. Minimum hair length: 0.0394" (1 mm), Maximum hair length: 0.709" (1.8 cm), Cutter width: 1.26" (3.2 cm). Product color: Black, Blue. Operating time: 50 min, Battery type: Li-ion, Charging time: 8 h