Model: K07 (BS-K07-B) | Brand: BSZHI
Overview
The BSZHI K07 is a compact, transparent Bluetooth speaker with built-in LED lighting effects. It is designed for portable use at home, in the office, outdoors, or while travelling. The speaker uses Bluetooth 5.0 for wireless connection and supports True Wireless Stereo (TWS) pairing with a second K07 speaker for left/right channel separation.
The speaker features a transparent ABS housing, a built-in 600 mAh rechargeable battery, and a maximum output power of 5 watts. It is controlled via touch buttons on the top panel and includes a USB port for charging and music playback from a USB flash drive.
What's in the Box
- 1 × K07 Bluetooth speaker
- 1 × USB charging cable
- 1 × User manual
Product Specifications
| Brand | BSZHI |
|---|---|
| Model | K07 (BS-K07-B) |
| Bluetooth Version | 5.0 |
| Maximum Output Power | 5 W |
| Audio Output Mode | Stereo |
| Driver Type | Dynamic Driver |
| Connectivity | Bluetooth, USB, Wireless |
| Bluetooth Range | Up to 100 ft (≈30 m) unobstructed |
| Battery Capacity | 600 mAh (Lithium Ion) |
| Battery Life | Approximately 4 hours (depends on volume and lighting) |
| Charging Input | 5 V ⎓ 0.5 A |
| Enclosure Material | Transparent ABS, Plastic |
| Dimensions (D × W × H) | 1.5 × 2.1 × 3.7 inches (38 × 53 × 94 mm) |
| Weight | 180 g (6.3 oz) |
| Water Resistance | Not water resistant |
| Color Options | Black, Orange |
Features
Bluetooth 5.0 Connectivity
The speaker is equipped with Bluetooth 5.0 for fast and stable pairing with smartphones, tablets, and other Bluetooth-enabled devices. The effective transmission range is up to 100 feet (≈30 m) in open space.
LED Lighting Effects
The K07 features nine built-in LED lights that flash in rhythm with the music. The lighting mode can be cycled through three patterns using the M button on the back of the speaker.
True Wireless Stereo (TWS) Pairing
Two K07 speakers can be paired wirelessly to create a left/right stereo channel system, delivering a wider soundstage. One speaker acts as the main unit and the other as the auxiliary unit.
USB Flash Drive Playback
The speaker includes a USB port that supports music playback directly from a USB flash drive (not included).
Built-in Microphone
The speaker has a built-in microphone for hands-free calling when connected to a smartphone.
Buttons and Indicators
| Control | Location | Function |
|---|---|---|
| Power / Play-Pause | Top panel | Press and hold to turn on/off. Short press to play or pause music. |
| Volume + / Next Track | Top panel | Short press to increase volume. Press and hold to skip to next track. |
| Volume – / Previous Track | Top panel | Short press to decrease volume. Press and hold to go to previous track. |
| M (Mode/Light) | Back of speaker | Short press to cycle through LED lighting modes (3 patterns + off). In TWS pairing, press and hold for ≈10 seconds to initiate pairing. |
| 9 LED lights | Front (under transparent cover) | Flash slowly when speaker is in pairing mode. Stay solid when connected. Change pattern with M button. |
Use Guide
Charging the Speaker
- Connect the included USB cable to the USB charging port on the speaker.
- Plug the other end into a standard USB power adapter (5 V, 0.5 A or higher, not included).
- The LED indicators will show charging status. A full charge takes approximately 2–3 hours.
- Battery life is approximately 4 hours at moderate volume with lights on.
Bluetooth Pairing (Single Speaker)
- Press and hold the Power/Play-Pause button to turn on the speaker. The nine LED lights will flash slowly, indicating the speaker is in pairing mode.
- On your smartphone or tablet, open the Bluetooth settings and search for available devices.
- Select "K07" from the list of discovered devices.
- When pairing is successful, the nine LED lights will stop flashing and remain solid.
- The speaker will automatically reconnect to the last paired device when turned on again.
True Wireless Stereo (TWS) Pairing – Two Speakers
- Press and hold the Power/Play-Pause button on both speakers to turn them on. The nine lights on each speaker will flash.
- On one speaker (this will be the main speaker), press and hold the M button for about 10 seconds. You will hear a "dong" sound when the other (auxiliary) speaker connects successfully.
- After pairing, the main speaker's lights will continue to flash (waiting for Bluetooth device connection), while the auxiliary speaker's lights will stay solid.
- Open Bluetooth settings on your phone or tablet, search for "K07", and tap to connect. Both speakers will now play in stereo.
Using the LED Lights
The LED lights are on by default when the speaker is powered on. To change the lighting mode:
- Press the M button once: lights spread from the middle outward.
- Press the M button twice: lights spread from bottom to top.
- Press the M button three times: lights gather from top to bottom.
- Press the M button four times: all lights turn off.
The cycle repeats after the fourth press.
Playing Music from a USB Flash Drive
- Insert a USB flash drive (FAT32 format, up to 32 GB recommended) into the USB port on the speaker.
- The speaker will automatically detect and begin playing MP3 files from the drive.
- Use the top panel buttons to control playback (play/pause, volume, track skip).
Hands-Free Calling
When the speaker is connected to a smartphone via Bluetooth, incoming calls will be announced through the speaker. Press the Power/Play-Pause button to answer or end a call. The built-in microphone picks up your voice.
Instructional Videos
Portable Bluetooth Transparent Mini Speaker with Lights, TWS
This video demonstrates the product in use and guides you through setup.
Mini Bluetooth Speaker with LED Light for Cell Phones
Customer review video showing the speaker in use with a smartphone.
Troubleshooting
| Issue | Possible Cause | Solution |
|---|---|---|
| Speaker does not power on | Battery is depleted | Charge the speaker for at least 2 hours using the included USB cable. |
| Cannot find "K07" in Bluetooth list | Speaker is not in pairing mode | Turn the speaker off and on again. Ensure the nine lights are flashing slowly. |
| Audio cuts out or is distorted | Bluetooth range exceeded or interference | Move the paired device closer to the speaker (within 30 ft). Avoid obstacles between devices. |
| LED lights do not turn on | Lights may be turned off | Press the M button repeatedly to cycle through lighting modes until lights appear. |
| TWS pairing fails | Speakers not in correct mode | Turn both speakers off. Restart the TWS pairing procedure from step 1. |
| USB drive not recognized | Unsupported format or file system | Ensure the USB drive is formatted as FAT32 and contains MP3 files. |
Safety and Maintenance
- Do not expose the speaker to water, rain, or high humidity. The speaker is not water resistant.
- Do not drop or subject the speaker to strong impacts.
- Charge only with a 5 V USB power source. Using a higher voltage may damage the battery.
- Do not disassemble the speaker. The battery is not user-replaceable.
- Clean the exterior with a soft, dry cloth. Do not use abrasive cleaners or solvents.
- Store in a cool, dry place when not in use for extended periods.
Warranty and Support
The speaker comes with a 6-month limited manufacturer warranty (as listed in product details).
For support, contact the seller (BSZHI) through Amazon. According to the product listing, customer service aims to respond within 12 hours.
Manufacturer: ZAKJ
ASIN: B0C6VQPDHM
