便携式 biànxiéshì portable
How to remember 便携式: 便 convenient + 携 to carry + 式 style = portable.
Characters
How it is used
- An attributive meaning 'portable' for devices - 便携式电脑 (biànxiéshì diànnǎo) a portable/laptop computer; 便携式充电器 (portable charger).
- The 式 (type/style) makes it a modifier; it always precedes a noun, you don't say something 很便携式.
- Tech/product register. Colloquially people often just say 便携 (biànxié) as an adjective: 很便携 (very portable).