1. Introduction
Thank you for choosing the Kuizil C16 True Wireless Stereo Earphones. This manual provides detailed instructions to help you get the most out of your new earbuds, featuring Bluetooth 5.3 connectivity, powerful bass, ENC noise cancellation, and IP7 waterproofing.
Video: Kuizil C16 Earbuds Feature Showcase
Key Features
- Long Battery Life: Up to 8 hours of playtime per earbud, and 48 hours total with the charging case.
- LED Digital Display: Clear indication of charging case and earbud power levels.
- Powerful Bass & Balanced Sound: Equipped with 13mm speaker drivers for HIFI stereo sound quality.
- Advanced Noise Cancellation: Features 4 ENC noise-cancelling microphones for clear calls.
- Bluetooth 5.3: Ensures faster connection, stronger signal, and lower power consumption.
- IP7 Waterproof: Designed to withstand rain, sweat, and splashes, ideal for sports.
- Ergonomic Design: Lightweight and comfortable with soft ear hooks and replaceable ear tips (S, M, L).
- Smart Touch Control: Easy management of music, calls, and voice assistant.
Image: C16 Earbuds with LED Digital Display and Battery Life Overview. Model No: C16, FCC ID: 2AXEL-C5S.
Image: Powerful Bass Balanced Sound with HIFI Stereo Quality, CVC 8.0 Noise Cancelling, HD Call, and 13mm Drivers.
2. Package Contents
Please check the package for the following items:
- Charging Case × 1
- Wireless Earbuds (Left & Right) × 2
- Type-C Charging Cable × 1
- Instruction Manual × 1
- Replaceable Ear Tips (S, M, L) × 4 pairs
3. Product Specifications
| Parameter | Value |
| Model | C16 |
| Bluetooth Version | 5.3 |
| Bluetooth Profiles Supported | HFP/A2DP/AVRCP/HID |
| Charging Port | Type-C |
| Earbud Battery Life | Up to 8 hours per full charge |
| Total Playtime (with case) | Up to 48 hours |
| Earbud Charging Time | Approx. 1.5 hours |
| Case Charging Time | Approx. 1.5 hours |
| Transmission Range | Up to 15 meters (without obstacles) |
| Material | Plastic |
| Battery Capacity (Case) | 400mAh |
| Waterproof Rating | IP7 |
4. Product Diagram
Familiarize yourself with the components of your C16 earbuds:
Image: Smart Touch Control and One-Step Pairing Visual.
- LED Indicator Light: Shows connection and charging status.
- MFB Button (Multi-Function Button): For power, pairing, calls, and music control.
- Charging Contact: Connects earbuds to the charging case.
- Battery Status Indicator of Charging Case: Digital display showing case battery percentage.
- LED Bar for Earbuds: Visual indicator for earbud battery level within the case.
- Charge Probe: Connects to the Type-C charging cable for case charging.
5. Setup
5.1 Initial Preparation
Before first use, ensure both earbuds and the charging case are fully charged.
5.2 Pairing Your Earbuds
Follow these steps to pair your C16 earbuds with your phone:
- Step 1: Power On and Auto-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