1. Product Overview
Thank you for choosing Kuizil A90 Pro Wireless Earbuds. This manual will guide you through the setup, operation, and maintenance of your new device.
What's in the Box
- Charging Case (x1)
- Wireless Earbuds (x2)
- Type-C Charging Cable (x1)
- Instruction Book (x1)
- Earbud Tips (x4)
Figure 1: Kuizil A90 Pro Earbuds and Charging Case
2. Specifications
| Feature | Specification |
|---|---|
| Bluetooth Version | 5.3 |
| Bluetooth Profiles | HFP/A2DP/HSP/AVRCP |
| Charging Port | Type-C |
| Earbud Battery Life | 6-8 hours |
| Total Playtime (with case) | Over 36 hours |
| Earbud Charging Time | 1.5 hours |
| Case Charging Time | 1.5 hours |
| Transmission Range | 15 meters (without obstacles) |
| Material | Plastic |
| Battery Capacity (Case) | 330 mAh |
| Maximum Wireless Range | 10m-20m |
| Vocalism Principle | Dynamic |
| Resistance | 32 Ω |
Figure 2: Extended Playtime and Fast Charging
3. Introduction to Components
Familiarize yourself with the different parts of your Kuizil A90 Pro earbuds and charging case.
- LED Indicator Light: Shows status of earbuds.
- MFB Button: Multi-function button for controls.
- LED Bar for Earbuds: Displays individual earbud charge status on the case.
- ENC Mic: Environmental Noise Cancellation microphone.
- Talk Mic: Microphone for voice calls.
- Battery Status Indicator of Charging Case: Digital display showing case battery percentage.
Figure 3: Digital Power Display for Case and Earbuds
Figure 4: Built-in ENC Noise Reduction Chip
Figure 5: Clearer Acoustic Sound with 13.0mm Speaker
4. Setup and Pairing
First Use
- Ensure both the earbuds and the charging case are fully charged before initial use.
- Remove the protective film from the charging contacts on the earbuds, if present.
Pairing with Your Phone
Your earbuds use Bluetooth 5.3 for a stable and efficient connection.
Figure 6: Bluetooth V5.3 Technology
- Step 1: Power On and Initial Pairing
- Take both earbuds out of the charging case. They will automatically power on and enter pairing mode.
- If the earbuds are not connected to any device for more than 5 minutes, they will automatically turn off. To manually turn them on, press and hold the MFB button on both earbuds for about 3 seconds until you hear