I am using an iPhone and followed the manual to connect via Bluetooth, but the device does not recognize my Btootos A90 Pro earbuds. What should I do?

If your iPhone is not recognizing the Btootos A90 Pro earbuds, please try the following troubleshooting steps to establish a connection: Check the Earbuds' State: Ensure the earbuds are fully charged. Open the charging...

What should I do if one of my Btootos A90 Pro earbuds stops charging a few seconds after closing the lid, even after cleaning the charging contacts?

If your Btootos A90 Pro earbud stops charging shortly after closing the lid despite cleaning the contacts, please try the following troubleshooting steps: Deep Clean the Contacts: Even if they look clean, use a...

Btootos A90 Pro

Download PDFFree PDF. The Save button below keeps a bookmark and private notes in your account.

Btootos A90 Pro Wireless Earbuds Instruction Manual

Your comprehensive guide to setting up, operating, and maintaining your Btootos A90 Pro Wireless Earbuds.

Introduction

The Btootos A90 Pro Wireless Earbuds are designed to provide a superior audio experience with advanced features and comfortable wear. This manual will guide you through the essential steps to maximize your earbuds' potential.

Key Features:

2025 Bluetooth 5.4 Technology: Ensures faster, more stable signal transmission with low latency and a range of up to 15m. Automatic pairing and multi-device compatibility.
Outstanding ENC Noise Reduction: Dual 14.2mm low-distortion composite dynamic drivers with AAC&SBC audio coding technology and ENC calling noise cancellation for clear sound.
LED Power Display: Convenient display on the charging case shows charge levels for both the case and earbuds.
Extended Battery Life: Up to 6-8 hours of usage on a single charge, with the charging case providing up to 30 additional hours (total 36 hours). Features Type-C fast charging.
Ergonomic IP7 Waterproof Design: Ultra-light Nano coating for IP7 waterproof grade, dust and rain proof. Comfortable in-ear design with soft silicone ear caps.

What's in the Box

Ensure all items are present upon unboxing:

A90 Pro Wireless Earbuds (L/R)
Portable Charging Box
USB-C Charging Cable
Silicone Earplugs (S / M / L)
User Manual

Btootos A90 Pro Earbuds and Accessories — An illustration showing all components included in the Btootos A90 Pro Wireless Earbuds package, including the earbuds, charging case, USB-C cable, and ear tips.

Setup Guide

1. Charging the Earbuds and Case

Before first use, fully charge your earbuds and charging case.

Connect the provided USB-C charging cable to the charging port on the case.
Connect the other end of the cable to a compatible USB power source.
The LED display on the charging case will show the current battery level. Allow approximately 1.5 hours for a full charge of the case.
Place the earbuds into the charging case. The earbuds will charge automatically.

Btootos A90 Pro Charging and Battery Display — Image showing the Btootos A90 Pro charging case with LED display indicating battery level, and earbuds being charged, highlighting the 36-hour total playtime.

Video demonstrating the unboxing and initial charging process of the Btootos A90 Pro Wireless Earbuds, including connecting the USB-C cable to the charging case.

2. Pairing with Your Device

The A90 Pro earbuds feature one-step automatic pairing.

Open the charging case. The earbuds will automatically power on and enter pairing mode (indicated by flashing lights on the earbuds).
On your device (smartphone, tablet, laptop), enable Bluetooth.
Search for "A90 Pro" in the list of available Bluetooth devices and select it to connect.
Once connected, you will hear a voice prompt, and the earbuds' indicator lights will turn off.

Btootos A90 Pro One-Step Pairing — An illustration demonstrating the one-step pairing process of the Btootos A90 Pro earbuds with a smartphone, showing the earbuds in the open charging case and the Bluetooth settings screen.

Video showcasing the quick and easy pairing process of the Btootos Wireless Earbuds with a mobile device, highlighting the instant auto-connection feature.

Operating Instructions

The A90 Pro earbuds utilize touch controls for easy management of calls and music.

Touch Controls:

Function	Action
Play/Pause	Tap once on either earbud
Next Track	Quickly tap right earbud three times
Previous Track	Quickly tap left earbud three times
Answer Call	Tap once on either earbud
End Call	Tap once on either earbud
Reject Call	Press and hold either earbud for 2 seconds
Activate Voice Assistant	Tap twice on either earbud
Volume Up	Single tap on right earbud
Volume Down	Single tap on left earbud

Btootos A90 Pro Touch Control Functions — Diagram illustrating the touch control functions of the Btootos A90 Pro earbuds, showing icons for play/pause, call answer, volume control, and track skipping.

Maintenance

Cleaning:

Regular cleaning ensures optimal performance and hygiene.

Gently wipe the earbuds and charging case with a soft, dry, lint-free cloth.
Remove ear tips and clean any earwax or debris from the earbud nozzles using a small brush or cotton swab.
Ensure charging contacts on both earbuds and case are clean and dry.

Water Resistance (IP7):

The earbuds are IP7 waterproof, meaning they are protected against immersion in water up to 1 meter for up to 30 minutes. They are resistant to sweat and rain, making them suitable for sports and outdoor activities.

Do not intentionally submerge the earbuds in water for extended periods.
After exposure to sweat or water, ensure the earbuds are completely dry before placing them back in the charging case to prevent damage.

Btootos A90 Pro IP7 Waterproof — Image depicting the Btootos A90 Pro earbuds with water droplets, illustrating their IP7 waterproof rating and resistance to sweat and rain.

Troubleshooting

Common Issues and Solutions:

Earbuds not pairing: Ensure earbuds are charged. Turn off and on Bluetooth on your device. Try resetting the earbuds (refer to the user manual for specific reset instructions).
No sound from one earbud: Place both earbuds back in the charging case, close the lid, wait a few seconds, then open and try again. Ensure both earbuds are connected to your device.
Low volume or poor sound quality: Clean the earbud nozzles and ear tips. Adjust volume on both your device and the earbuds. Ensure a stable Bluetooth connection.
Charging issues: Clean the charging contacts on both the earbuds and the case. Ensure the USB-C cable and power source are working correctly.

Specifications

Feature	Detail
Model Name	A90 Pro
Brand	Btootos
Connectivity Technology	Wireless (Bluetooth 5.4)
Bluetooth Range	Up to 15 meters
Audio Driver Size	14.2 Millimeters
Noise Control	Passive Noise Cancellation, Sound Isolation (ENC Call Noise Reduction)
Playtime (Earbuds)	6-8 hours
Playtime (with Charging Case)	Up to 36 hours
Charging Time (Case)	1.5 hours
Charging Port	USB-C
Water Resistance Level	IP7 Waterproof
Control Type	Touch Control
Ear Placement	In Ear
Item Weight	3.52 ounces

Warranty & Support

For warranty information and technical support, please refer to the official Btootos website or contact their customer service directly. Keep your purchase receipt for warranty claims.

Online Support: Visit the Btootos Store on Amazon

Ask a question about this manual

Ask about setup, troubleshooting, compatibility, parts, safety, or missing instructions. Manuals+ will review the question and use this page’s manual context to help answer it.