ienza&reg; USB Charging Cable for Portable Bluetooth Speakers - See List of Compatible Devices (3ft Cable + AC Adapter) USB Charging Cable for Portable Bluetooth Speakers Compatible with most popular brands such as: Omaker M4 Portable Bluetooth and TaoTronics Portable Bluetooth Wireless Speaker. See partial list of Compatible devices below. Contact vendor if your device is not listed. Ienza is a registered trademark. Use of the ienzaTM trademark without the prior written consent of ienza, LLC. may constitute trademark infringement and unfair competition in violation of federal and state laws. ienza products are developed as cost-effective alternatives to OEM parts. They are not necessarily endorsed by the OEMs....Guarantee: If you are not satisfied with the product you received, send it back to us within 30 days and we will issue you a refund.