It can be used as a necklace too. 
 
What Is A Buddhist Bracelet
Buddhist bracelet usually has less than 108 beads, a traditional number of beads in mala, however, such an accessory also has its spiritual significance. In most cases, wrist mala consists of 18, 21 or 27 beads. Mala bracelet can be made of diverse natural material, each of which has its own meaning. Peachwood, for example, prevents and wards off disaster. Juniper beads protect from the evil. Sandal calms down and heals, while lotus seeds bring profundity of thought and longevity. Semi-precious stones are almost never used for Buddhist bracelets for a row of reasons.
Mala bracelet is small and unordinary, that makes such kind of accessory so special, not mentioning its ability to give people power and energy. The most important thing you need to remember is to use and wear a given special bracelet with good intentions and faith.
 
 
Beads And Their Types
Any type of bead, whether it is made of stone, seed or wood, has its own meaning. For example:
Tiger’s eye stone is a powerful talisman which helps people make the right decision. It is known that the tiger’s eye stone is able to make people more confident, determined and strong. Given stone brings its owner luck and prosperity, as well as brings a better understanding of certain things and helps heal the chakras.
Citrine makes its owner a happier and awakes love for life. It also attracts wealth, prosperity, and fortune. This gemstone is known for making its owner more confident. Citrine promotes the development of creative potential, brings joy and love into its owner’s life, as well as inspires and helps always reach the desired goal.
Rock crystal is one of the most powerful energy boosters and healing stones. Rock crystal is known for its healing properties; it helps to work with Sahasrara chakra which is responsible for inner and outer beauty and renewal. This stone also promotes long life and health.
Bead color also matters. Yellow color helps its owner with the new beginnings, increases his/her communication skills, and promotes success at work. White color promotes healing and calmness. Green, grey and black colors are good for spiritual development. Red color gives power, increases energy and helps find love, while purple one inspires and brings fortune. Bone beads have a special power and meaning, reminding people to value life and be more compassionate.