Csasan J90 Pro Wireless Earbuds User Manual

Introduction

Thank you for choosing the Csasan J90 Pro Wireless Earbuds. These earbuds are designed to provide a superior audio experience with advanced features such as Bluetooth 5.3 connectivity, ENC noise cancellation, and a long-lasting battery. This manual will guide you through the setup, operation, and maintenance of your new earbuds.

What's in the Box

Csasan J90 Pro Wireless Earbuds (Left and Right)
Charging Case
USB Charging Cable
Ear Tips (S/M/L sizes)
User Manual

Product Overview

Csasan J90 Pro Wireless Earbuds in charging case with LED display showing 100% charge.

Image: The Csasan J90 Pro Wireless Earbuds are shown inside their light green charging case. The case features a digital LED display on the front indicating "100" for the case's battery level, and separate battery indicators for the left (L) and right (R) earbuds. The earbuds themselves are white with light green stems, and blue light indicators are visible on the stems, suggesting they are active or charging. The overall design is sleek and compact.

The Csasan J90 Pro earbuds feature an ergonomic in-ear design for comfortable wear. The charging case includes a real-time LED power display, showing the battery levels of both the case and individual earbuds. The earbuds are equipped with smart touch controls for easy management of music and calls.

Setup

1. Charging the Earbuds and Case

Place the earbuds into the charging case. Ensure they are correctly seated in their respective slots (L for left, R for right).
Connect the USB charging cable to the charging port on the case and plug the other end into a USB power adapter (not included) or a computer's USB port.
The LED display on the charging case will show the current battery percentage of the case and individual charging status of the earbuds. A full charge is indicated by "100" on the display and full battery bars for both earbuds.
Allow approximately 1.5 hours for a full charge of the earbuds and 2 hours for the charging case.

2. Pairing with Your Device

Ensure the earbuds are charged.
Open the charging case. The earbuds will automatically enter pairing mode, and their indicator lights will flash.
On your device (smartphone, tablet, computer), go to the Bluetooth settings.
Search for available devices and select "J90 Pro" from the list.
Once connected, the earbud indicator lights will turn off or show a steady light, and your device will confirm the connection.
If pairing fails, place the earbuds back into the case, close the lid, wait a few seconds, and then repeat the steps.

Operating Instructions

Smart Touch Controls

The Csasan J90 Pro earbuds feature intuitive touch controls on the outer surface of each earbud. The touch area allows for various functions without needing to access your phone.

Function	Action
Play/Pause Music	Single tap on either earbud
Next Track	Double tap on the Right earbud
Previous Track	Double tap on the Left earbud
Answer/End Call	Single tap on either earbud
Reject Call	Press and hold either earbud for 2 seconds
Activate Voice Assistant (Siri/Google Assistant)	Triple tap on either earbud
Volume Up	Press and hold Right earbud
Volume Down	Press and hold Left earbud

Wearing the Earbuds

Choose the ear tips that provide the most comfortable and secure fit for optimal sound quality and noise isolation. Gently insert the earbuds into your ear canal and rotate them slightly until they feel snug.

Maintenance

Cleaning: Regularly clean the earbuds and charging case with a soft, dry, lint-free cloth. Do not use harsh chemicals or abrasive materials. For ear tips, remove them and clean with a damp cloth, then dry thoroughly before reattaching.
Storage: When not in use, store the earbuds in their charging case to protect them from dust and damage. Store in a cool, dry place away from direct sunlight and extreme temperatures.
Battery Care: To prolong battery life, avoid fully discharging the earbuds and charging case frequently. Charge them regularly, even if not used for extended periods.
Water Resistance: The earbuds are IP7 waterproof, meaning they can withstand splashes and sweat. However, they are not designed for swimming or submersion in water. Ensure the charging port is dry before charging.

Troubleshooting

Problem	Solution
Earbuds not pairing	Ensure earbuds are charged. Turn off Bluetooth on your device and turn it back on. Forget "J90 Pro" from your device's Bluetooth list and re-pair. Place earbuds back in the case, close the lid, wait 5 seconds, then open and try again.
Only one earbud working	Ensure both earbuds are charged. Place both earbuds back in the charging case, close the lid, then open them again to re-establish connection. Try resetting the earbuds (refer to manufacturer's specific reset instructions if available, otherwise, a full charge and re-pairing often works).
Low volume or poor sound quality	Adjust volume on both your device and the earbuds. Ensure ear tips are clean and properly seated in your ear. Try different sized ear tips for a better seal. Clean any debris from the earbud speaker mesh.
Charging case not charging	Check the charging cable and power adapter. Try a different cable or adapter. Ensure the charging port on the case is clean and free of debris.

Specifications

Feature	Detail
Brand	Csasan
Model Name	J90 Pro
Connectivity Technology	Wireless (Bluetooth 5.3)
Headphone Form Factor	In-Ear
Battery Composition	Lithium Polymer
Rechargeable Battery	Yes
Product Weight	100 g
Color	Green
Water Resistance	IP7 (Waterproof)
Playtime	Up to 40 hours (with charging case)
Diaphragm Size	13mm

Warranty and Support

Csasan products are manufactured to the highest quality standards. For warranty information or technical support, please refer to the contact details provided on the product packaging or visit the official Csasan website. Please retain your proof of purchase for warranty claims.

Csasan J90 Pro