This document describes a portable speaker, model TT810BT, designed for versatile audio playback. It supports multiple input sources and offers various features for an enhanced user experience.

Function Description:

The device functions as a portable audio player with several input options. It can play MP3 format files from SD/MMC cards and USB drives. It also features an FM radio tuner with a frequency range of 87.5-108 MHz. An AUX input (LINE IN) allows connection to external music sources such as mobile phones, MP3/MP4 players, and PCs. For karaoke enthusiasts, the device includes a "Kalaoke Function" with a MIC input. The speaker is rechargeable via a DC 5.0V adapter.

Important Technical Specifications:

Speaker Power: 10W, 5-inch speaker
Battery: Lithium battery 3.7V, 1800mAh
Dimensions: 220x210x340mm
Output: 10W
Frequency Response: 150Hz-18kHz
SNR (Signal-to-Noise Ratio): ≥80dB
Loudspeaker: 5 inch (external diameter 127mm), magnetic resistant 2 Ohms
Power Supply: DC 5V USB
FM Frequency Range: 87.5-108 MHz
Supported Audio Format: MP3 (from SD/MMC Card, U disk)

Usage Features:

The device offers intuitive controls for playback and mode selection.

Power/Charging: Connect the DC 5.0V adapter to the charging port on the back of the speaker to charge the device.
Mode Selection: The "MODE" button allows switching between U disk, SD/MMC, FM, and AUX input modes. The device automatically recognizes memory cards and USB drives without requiring manual switching.
Navigation and Volume Control:
- "PREV/VOL-" (Backward/Volume down): A short press goes to the previous track/station. A long press decreases the volume. In FM mode, a short press selects the previous channel.
- "NEXT/VOL+" (Forward/Volume up): A short press goes to the next track/station. A long press increases the volume. In FM mode, a short press selects the next channel.
- "PLAY/PAUSE": A short press plays or pauses the current track. In FM mode, a short press initiates auto-scanning and saving of radio stations.
Equalizer (EQ) Modes: The "EQ" button allows selection of different audio modes to suit various music genres, including Natural, Rock, Pop, Classical, Light, Jazz, and Subwoofer.
Remote Control Features:
- "CH" button (Remote Control): In FM mode, this button initiates auto-scanning and saving of radio stations.
- "Digital" button (Remote Control): In MP3 mode, this button allows selecting specific music tracks. In FM mode, it allows selecting channels.
Karaoke Function: To use the karaoke feature, connect a microphone to the "MIC" input.
External Audio Input: Connect a 3.5mm stereo audio cable to the "LINE IN (AUX)" port to play music from external devices.

Maintenance Features:

The manual does not explicitly detail maintenance features. However, general care for electronic devices would apply:

Keep the device away from water and extreme temperatures.
Clean the device with a soft, dry cloth.
Ensure proper charging to prolong battery life.

FCC Compliance:

The device complies with Part 15 of the FCC Rules, ensuring it meets standards for electromagnetic interference.

It is designed to provide reasonable protection against harmful interference in residential installations.
Users are advised to reorient or relocate the receiving antenna, increase separation between equipment and receiver, or connect the equipment to a different circuit if interference occurs.
Any changes or modifications not expressly approved by the responsible party could void the user's authority to operate the equipment.
Shielded interface cables should be used when connecting to computers or peripheral devices to maintain compliance.
The device is evaluated to meet general RF exposure requirements and can be used in portable exposure conditions without restriction.

Toptech TT810BT - Page 2