Specification:

Wireless version: V4.1
Operation range: ≤10m
Battery capacity: 400mAh
Driver Unit: 40mm
Impedance: 32 Ω
Charging voltage: DC5V
Working time: 6-8h
Microphone: built-in
Power rating: 40mw
Working voltage: DC3.7V
Frequency: 20-20KHz
Audio cable included
Standy time: 20 days

1. Are these products with after-sale services?

Yes, our products are include warranty, for small quantity, replacement can be negotiated, for large quantity, we need them back for check and find out problem, then offer best solution.
 

2. What kind of payment do you accept.

We accept ,  West Union and TT, and additional fee are different.

Payment can support Master Card.

West Union: No Additional fee

TT: Every payment 20USD additional fee.
 

3. Do you support logo printing and new product development.

Yes, we have professionla R&D team, Industrial Design Team and manufature ability, we are willing to do more deep cooperation with clients.
 

4. Do you offer samples?

Yes, sample is supported,  but we do not support free sample, please understand. For further cooperation, we will deduct the fee for sample and offer new product with orders.