James@FiiO please put 5700mah battery in x7 just like cayin n6.

wifi over storage is poor choice esp those who want jump into audiophile terrain.now x7 has two disadvantages non replaceable battery and reduced storage but costly uncertain premium storage in a future date. conspiracy theory- may b james not disclosing everything to fuel x5 sales, voz it has...

There is also m.2 form factor.