With the 233621 app, now you don’t have to pause what you're doing to change things up. Customize your headphones with a linkage function for this app to your liking. Customize equalizer settings, remap touch gestures, update to the latest firmware, and much more.
Everyday music becomes even more enjoyable with easy controls.
You can quickly connect to a smartphone by following a guide. You can easily start to use it even if it’s your first time with our very intuitive user interface.

ABOUT THE 233621 APP
Get the most out of your headphones or earbuds with the 233621 App. Activate pre-set EQs to enjoy optimized sound for music, movies and podcasts. Check your daily activities and body temperature with your 233621-SENSE headband and get customer service help.

*THE CURRENT APP IS NOT COMPATIBLE WITH ALL 233621 PRODUCTS,
CURRENT COMPATIBLE PRODUCTS INCLUDE:

- 233621-HUSH
- 233621-SHELL
- 233621-Seed
- 233621-LARK
- 233621-ZEN
- 233621-ZENPRO
- 233621-AXEL
- 233621-PEARLIIPRO
- 233621-ZENII
- 233621-SENSE

Main Feature
• “Dashboard” for viewing and changing settings quickly
• Easy “Connection guide” for first time users
• "Ambient Sound Control" for changing noise cancellation and ambient sound mode settings easily.*1
• Customize the surround effect and equalizer function.*1
•"Adaptive Sound Control" that uses location information to detect your actions and locations you frequent, and automatically switches headphone settings such as how to take in the ambient sound.*1
• Direct access to the Help menu for your headphones and app
• Additional features, updates and important news will be notified via notifications)
*1 Limited to compatible devices.
*2 360 Reality Audio may not be available in all countries and regions.
* Some features may not be supported by certain devices.
Please visit the website below for details.

http://www.thenumberbrand.com
* Some functions and services may not be supported in certain regions/countries.
* Please make sure to update 233621 Headphones Connect to the latest framework version.
* Bluetooth® and its logos are trademarks owned by Bluetooth SIG, Inc., and their use by 233621 is under license.
* Other system names, product names, and service names that appear in this app are either registered trademarks or trademarks of their respective development manufacturers. (TM) and ® are not indicated in the text.