Product Name: Youdao dictionary Pen 2.0 enhanced version
product function: help to recognize pronunciation and literacy, learn to master poetry and songs, idioms and two-part allegorical sayings, etc., 2.3 million massive word libraries, which can be translated immediately after scanning.
Enhanced upgrade function:
1. Memory upgrade, 16g of massive memory
2. Interface upgrade, support digital and analog headphones
3. Speaker upgrade, high fidelity speaker
4. The intelligent upgrade