BQ618 Bluetooth Headphone Built-in Microphones Noise Cancelling Wireless Sports Running Headsets Stereo Sound Hifi Earphones

Product Parameters: output power: 32s 45mW frequency response: 200Hz-2000Hz sensitivity: 120db 3db signal-to-noise ratio: ≥ 90DB distortion: 0.5% Bluetooth standard: Bluetooth 4.1 + EDR support protocol: HFP. A2DP.AVRCP supports 3.5 audio input power supply mode: built-in lithium battery 190mAh when charging, it is: 3 hours (please extend the charging time for the first time) Effective distance: 10 m Working hours: more than 10 hours Standby time: 250 hours charging interface: Micro USB built-in microphone, support digital signal proceing Echo Cancellation Technology Product features: Smart Bluetooth, wirele HIFI suspended micro HIFI sound effect

About shipping
Shipping and Packaging All itwill be double checked and well packed before sending.Itwill be dispatched within 2 business days after buyers pay for the order. It usually takes about 14 to 18 working days for delivering the package to the destination(for e areas,it may take a little longer). 

Special Announcement:
Please fill in the correct and detailed consignee, address and phone number in the order. For fast and correct delivery.If you do not receive order within 30 working days,please feel free to contact Customer Service before leaving Negative and Neutral Feedback, we will do our best to help you resolve the problem.TaxNo, you will only pay what is quoted as total cost at checkout, no more. You are not expected to pay any additional duties ores. If you are asked by Customs or our logistic partner to pay duties, please contact our Customer Service .

Your 100% satisfaction is very important to us
If the product is not on good condition, You can return this product within 14 working days, please contact customer service center before returning.FeedbackYour satisfaction is our first priorityIf you receive the order and it is in good condition,we would be grateful if you would leave us 5 star Positive Feedback for the transaction.