You can choose different sounds from Dreamie's library for each category. Some options come with ambient lighting effects, too. There's a decent selection of soundscapes, from the dramatic Aurora Borealis and the sounds of storms and rivers to different "colors" of noise.
Complete List of 16-bit Service UUIDs
。关于这个话题，PDF资料提供了深入分析
ITmedia�̓A�C�e�B���f�B�A�������Ђ̓o�^���W�ł��B
would play a short tune, different on every model.