Inclusion Criteria:

- Woman

- Age > 18 years

- Well-informed written consent, signed by the patient before the beginning of the
study

- Breast cancer's diagnosis (operated or not)

- Forecast of a treatment by FEC100 chemotherapy's sort (D1=D21) during at least 3
cycles.

- Patient affiliated at a welfare or beneficiary from it

- Investigator estimates that the patient is able to conform with protocol's conditions
and to respect them

Exclusion Criteria:

- Operated arm's lymphedema

- Wrist's morphology which cannot permit the bracelet's wearing (20 cm)

- D1=D15 FEC100's treatment

- Psychic incapability to sign a well-informed consent

- Refusal to give a written consent

- Patient under tutelage or guardianship

- Pregnant or breast-feeding woman

- Any clinical trial's participation which would impose nausea and vomiting's treatment
modalities