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Quick Details

  • Brand Name: OEM
  • Model Number: RU9
  • Style: In-Ear
  • Communication: Wireless
  • Connectors: USB
  • Use: Mobile Phone
  • Function: Bluetooth, Microphone, Noise Cancelling, Waterproof
  • Place of Origin: Guangdong, China (Mainland)
  • Color: Black, Blue, Gray, Multi, Red, White
  • Bluetooth specification: V4.1+EDR
  • Bluetooth Profiles: HFP, HSP, AVRCP and A2DP
  • Operating distance: Up to 10 meters
  • Battery capacity: 100 mAH
  • Chipset: CSR 8635
  • Working time: About 6-8 hours
  • Standby time: up to 240 hours
  • Charging time: 1.5 hour
  • Charging port: Micro USB
  • Key Words: 4.1 wireless stereo mobile headphone

Packaging & Delivery

Packaging Details Color box/gift box 4.1 wireless stereo mobile headphone
Delivery Time within 2 days
Product Description

Amazon best seller senso IPX7 waterproof bluetooth 4.1 wireless stereo mobile headphone stereo bluetooth headset RU9

4.1 wireless stereo mobile headphone

 Why Choose RU9 4.1 wireless stereo mobile headphone?

1.IPX7 waterproof function
2.The very stable working performance.
3. Long working time: Up to 8 hours.
4. Hifi sound and super bass sound.
5. Impressive quality with competitive price

Item name
RU9 4.1 wireless stereo mobile headphone

* Bluetooth V4.1+EDR, CSR 8635 chipset
* Bluetooth profiles supported: HFP, HSP, A2DP, AVRCP
* Operation range: up to 10 meters
* Woking time: about 6-8 hours
* Standby time: 240 hours
* Charging time: about 1.5 hours
* Battery capacity: 85mA
* Product size: 40*24*32mm
* CVC 6.0 Noise Cancellation technology
* Voice prompt
* IOS battery capacity display
* Multi-point function, can connect 2 mobile phones at the same time.
* Pause the music: short press the MFB one time
* Next song: short press the MFB twice
* Answer a call: use single earphone to answer call, short press MFB one time.
* End a call: short press MFB one time during call
* Reject a call: short press MFB twice
Price Terms
EXW price
Payment Terms
T/T,Western Union, paypal
OEM Total amount: 40% deposit , balance before shipment.
( Paypal is available for sample orders.)
Detailed Image
Packing & Delivery


What’s in the box?

4.1 wireless stereo mobile headphone RU9
* 3 ear tips(S,M,L)

* Charging cable
* User manual

1. OEM order MOQ: 1000 pcs
2. Quantity each carton:100pcs,carton size:51*43*39cm,18KGS per carton
3. Color: Customize
4. Delivery time: 25 days usually
5. Certificate:FCC, RoHS, CE, BQB
6. Warranty time: 13 months
7. All products will be tested 3 times before shipment.
8. We're pleased to help to ship to your Amazon warehouse directly. 

For OEM, we have several models for your reference below. You can do any packaging you like and we are good at design. Most sellers doing Window packaging and Kraft box. 


1.1-3 days for sample order
2. About 25 working days after receiving deposit for larger order.

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Hot-selling bluetooth headset RU8S

Our Company
Rambotech is a most professional and responsibility company in sport bluetooth ear buds in China. We focus on Bluetooth Products up to 10 years. Our product cover:
Bluetooth Speaker
BT Stereo Headset
Bluetooth Car Kit
BT Watch&Bracelet
Bluetooth Adapter
Bluetooth Adapter
Bluetooth Adapter
Bluetooth Adapter
OEM & ODM service

OEM & ODM order is warmly welcomed in Rambotech and we have lots of successful experiences in doing OEM & ODM projects. What’s more, we have design team who can give you the professional suggestions on package, silk printing, etc.

After-sale Service:

A. Technical support: After you get your goods, if you have any questions, such as testing and installation, professional technical engineers are ready to serve you at any time.

B. Product warranty: 12 month warranty, in normal use cases within guarantee period. We offer replacement without any hesitation if the product have any quality problem.

C. We sincerely welcome any feedback from clients & will try our best to do better for you.


Our products meet the CE,RoHS,TTS standards, always assuring your customers highest quality demands. Welcome to visit us any time.

FAQ and contact us
Transaction History of the Supplier

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Transaction Details

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Trade Assurance
China (Mainland)
Transaction Level:
Supplier Assessments:
10 Transactions 20,000+
The supplier’s transactions conduted via Alibaba.com in the past 6 months.
The supplier supports Trade Assurance – A free service that protects your orders from payment to delivery.
Supplier's Trade Assurance Limit: US $78,000
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