Instruct: Classify Amazon reviews into positive or negative sentiment
Query: low resolution, and slow

details and colors are hard to distinguish when challenging applications and programs in use.Touch screen has a long response time. Don't buy "brain trainer" for z22, you will be frustrated by the slow response time and low resolution.The alarm signal on max is so quiet that you will not hear it being on a busy street or holding that cluncy palm in a pocket or backpack.Battery life has a long time only when used with calendar app. Chess trainer uses battery quickly.Don't trust those praising voices, these are sellers and wholesellers.Do not buy it, it is not worth the money.