These are my Tibetan Prayer Bells, called tingshas. I got them here in Hamamatsu at a fair trade shop called ふぇあういんず (Fair Winds). Tingshas are traditionally used by Tibetan Buddhists as chimes to mark the beginning and end of meditation.
They make a beautiful, clear, sweet chime that resonates throughout the room, creating space and cleansing the mind of negative thoughts. They also look and feel beautiful - the bells are hand cast from 7 different metals. Each one is decorated with Tibetan good luck symbols.