4.What are the accessories? What are the differences between the ear tips? And how to choose the suitable one?

[Accessories included]]
The FH5s is rest assured with abundant accessories:
--A high-purity monocrystalline silver-plated copper cable with 2.5/3.5/4.4mm interchangeable plugs
--An MMCX assist tool- can help to detach the MMCX connector easily
--A leather carrying case HB5
--A cleaning brush & tuning stick
-- Rich ear tips

[Differences between the ear tips]]
1. Red and Black ear tips: Bass ear tips, which can improve the bass sense.
2. Translucent white ear tips: Balanced ear tips, based on the tuning standards while actual listening experience may vary from users.
3. Red and White ear tips: Vocals ear tips, more outstanding on mids performance with crisp and clean vocals positioned slightly forward.
4. Translucent white bi-flange ear tips: lengthened ear tips that go deeper into the ear canal, achieving richer bass and highs.
5. Memory foam ear tip: more fit for ear canals with better sound insulation and noise cancellation effects, making for more bass sense.

[How to choose suitable ear tips for the FH5s?]?]
The external diameter of its sound tube is designed to be 5.8mm. So it's recommended to choose 4~5mm ear tips. Note that the sound tube of the FH5s is integrated which cannot be replaced.