Philips Sonicare 4100 Electric Toothbrush — White HX3681/04

^$39.99

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About this item

Sonic technology 31,000 strokes/min, pressure sensor, 1 mode, 14-day battery. Dentist recommended.

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Vault Verified Fit Guide

Measure your foot length in centimeters (standing, end of day) for the most accurate fit.

US	UK	EU	CM
5	3.5	35.5	22.5
5.5	4	36	23
6	4.5	36.5	23.5
6.5	5	37.5	24
7	5.5	38	24.5
7.5	6	38.5	25
8	6.5	39	25.5
8.5	7	40	26
9	7.5	40.5	26.5
9.5	8	41	27
10	8.5	41.5	27.5
10.5	9	42	28
11	9.5	42.5	28.5
11.5	10	43	29
12	10.5	44	29.5
13	11.5	45	30.5

Regional Notes:
US/CAN: Standard baseline. Women's: add 1.5 to men's UK size.
UK: Common in UK, Australia, and most African markets (South Africa, Nigeria).
EU: Universal standard for luxury and designer footwear. Whole + half sizes.
CM / Asia (JP/CN/KR): Most precise system. Measure your foot length in millimetres and round to nearest 5mm.

If between sizes: Size up for wider feet, size down for narrow. Most performance shoes run true to size.

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Philips Sonicare 4100 Electric Toothbrush — White HX3681/04

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