Bluetooth parameters Effective distance 33ft./10m Version 4.1
Frequency response: 20 - 20.000KHz 6C CVC noise reduction
NOTES
Do not expose the built-in battery to excessive heat including direct sunlight and fire. This earphones Is In compliance with the specified Bluetooth version. It does
not guarantee compatibility of all functions on every Bluetooth enabled device, Please check with your mobile phone's user manual for compatibility and