Karler Bass is a company that concentrates on research and development of new technology and new appearance for Bluetooth headphones and earphones. We accept many OEM/ODM orders from different countries. We focus on developing new technology and new appearance. Publish at least 50 new models every year. We hired the best QC staff for our factory. 24 hours online customer service E-mail for any problem of our products. Every products have 1 year warranty period. Our designers are 24 years old ave