Jazmm Jazmm
Jazmm Portable AM/FM/SW Radio User Manual
Model: Jazmm | Brand: Jazmm
1. Introduction
This manual provides detailed instructions for the operation and maintenance of your Jazmm Portable AM/FM/SW Radio. Designed for excellent reception across multiple bands, this compact device features a digital tuner, preset stations, a rechargeable battery, and an LCD display for enhanced usability. Please read this manual thoroughly before using your radio to ensure optimal performance and longevity.
2. What's in the Box
Upon opening the package, please verify that all the following components are included:
- Jazmm Portable AM/FM/SW Radio
- Earphone
- USB Charging Cable
- Wrist Strap
- Owner's Manual (this document)

Figure 2.1: Package Contents
3. Product Overview
Familiarize yourself with the various parts and controls of your Jazmm Portable Radio.

Figure 3.1: Front View of the Radio
Key Features:
- Multi-Band Reception: Supports FM (87-108MHz), AM (520-1710kHz), and SW (4.75-23.80MHz) frequencies.
- Digital Tuner with DSP Chip: Ensures stable reception and wide coverage.
- 900mAh Rechargeable Battery: Provides long-lasting operation (up to 23 hours on a full charge).
- LCD Display: Large, illuminated digital display shows channels, volume, and remaining battery.
- Ultra-large Speaker & 3.5mm Earphone Jack: Delivers clear, loud sound and allows for private listening.
- Quick Preset & Auto Scan: Save up to 40 preset stations and automatically search for available channels.
- Sleep Timer: Set the radio to turn off automatically after a set period (15-90 minutes).
- Lock Screen Function: Prevents accidental changes to settings.
- Compact & Portable: Ergonomically designed for comfortable grip, fits easily in pockets and backpacks.

Figure 3.2: Overview of Radio Features
4. Setup
4.1 Initial Charging
Before first use, fully charge your Jazmm Portable Radio. The radio features a built-in 900mAh rechargeable battery.
- Locate the USB charging port on the radio (typically on the side or bottom).
- Connect the provided USB charging cable to the radio's charging port.
- Connect the other end of the USB cable to a 5V/1A USB charger (not included) or a compatible USB power source.
- The LCD display will indicate charging status. A full charge typically takes approximately 2.5 hours.
- Once fully charged, the radio can operate for up to 23 hours, depending on usage and volume levels.

Figure 4.1: Charging the Radio
5. Operating Instructions
5.1 Power On/Off & Sleep Function
- To power on the radio, press and hold the POWER/SLEEP button located on the side.
- To power off the radio, press and hold the POWER/SLEEP button again.
- To activate the sleep timer, short press the POWER/SLEEP button while the radio is on. Use the tuning buttons to set the desired sleep time (15 to 90 minutes). The radio will automatically turn off after the set time.

Figure 5.1: Sleep Timer Function
5.2 Tuning and Band Selection
- Press the BAND button to cycle through the available frequency bands: FM, AM, and SW (Shortwave).
- Use the TUNING arrow buttons (left/right arrows) to manually tune to a specific frequency.
- For enhanced reception, extend the telescopic antenna for FM and SW bands. The headphone cable can also serve as an antenna to improve signal reception.

Figure 5.2: Multi-Band Reception
5.3 Auto Scan and Preset Stations
The radio can automatically search for and save available stations, or you can manually save your favorite channels.
- To perform an auto scan, press and hold the MEM./SCAN button. The radio will scan and save up to 40 available stations.
- To recall a preset station, short press the MEM./SCAN button to enter preset mode, then use the TUNING arrow buttons to navigate through saved stations.
- To manually save a station: Tune to the desired station, then press and hold the MEM./SCAN button until the display indicates it's saved.

Figure 5.3: Auto Scan and Preset Features
5.4 Volume Control
Adjust the volume using the dedicated volume buttons located on the side of the radio.
- Press VOLUME + to increase the volume.
- Press VOLUME - to decrease the volume.
5.5 Earphone Use
For private listening, connect the included earphones or any standard 3.5mm headphones to the earphone jack.
- Insert the 3.5mm earphone plug into the earphone jack on the top of the radio.
- The radio's internal speaker will automatically mute when earphones are connected.

Figure 5.4: Earphone Connection
5.6 Lock Screen Function
To prevent accidental button presses, activate the lock screen function.
- Press the LOCK button (usually indicated by a padlock icon) to lock the controls.
- Press the LOCK button again to unlock the controls.
6. Maintenance
- Cleaning: Use a soft, dry cloth to clean the radio's exterior. Do not use abrasive cleaners or solvents.
- Storage: When not in use for extended periods, store the radio in a cool, dry place away from direct sunlight and extreme temperatures.
- Battery Care: To prolong battery life, avoid fully discharging the battery frequently. Charge the radio regularly, even if not in constant use.
- Water Exposure: This radio is not waterproof. Avoid exposure to water or high humidity.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Radio does not turn on. | Battery is depleted. | Charge the radio fully using the provided USB cable. |
| Poor reception/Static. | Weak signal; antenna not extended. | Fully extend the telescopic antenna. Try repositioning the radio. Use earphones as an auxiliary antenna. |
| Buttons are unresponsive. | Lock screen function is active. | Press the LOCK button to deactivate the lock screen. |
| Cannot save preset stations. | Memory full or incorrect procedure. | Ensure you are following the correct procedure for saving presets. The radio supports up to 40 presets. |
8. Specifications
| Feature | Detail |
|---|---|
| Brand | Jazmm |
| Model Number | Jazmm |
| Product Dimensions | 2.2 x 0.79 x 4.1 inches (L x W x H) |
| Item Weight | 3.17 ounces |
| Battery | 1 Lithium Polymer battery (included), 900mAh Rechargeable |
| FM Frequency | 87-108MHz |
| AM Frequency | 520-1710kHz |
| SW Frequency | 4.75-23.80MHz |
| Connectivity Technology | AM FM SW |
| Special Feature | Portable |
| Color | Blue |
| Manufacturer | Jimeng |
9. Warranty and Support
Jazmm offers a lifetime warranty on its portable radios. For any questions, technical assistance, or warranty claims, please contact our 24/7 world-class customer service.
You can also visit the official Jazmm store for more information and support:
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