Features:
【Turns Anything Hollow into a Speaker】Transform any hollow object into a speaker with this mini bone conduction speaker, the smallest on the market at just 4.3cm (1.69") in diameter. Enjoy a unique and impressive sound experience wherever you go. Simply turn it on, connect via BT, and it's ready to use.
【Different Surfaces Different Sounds】The Hum-Pro speaker utilizes bone conduction technology, allowing you to experiment with various sound effects by placing it on different smooth surfaces such as mirrors, guitars, Kraft boxes, plastic storage containers, photo frames, sports headphones, or even dashboards.
【Immersive Stereo Experience】The bone conduction speaker supports true wirless connection, enabling you to pair two Hum-Pro speakers for a 2.0 surround sound experience. Additionally, the speaker also supports multi-speaker mode, allowing you to pair multiple Hum-Pro speakers for stunning sound effects.
【Enhanced Visual and Auditory Enjoyment】Activate the rhythm lamp mode by pressing the power button four times after turning on the speaker. The RGB color-changing light effect adds a stylish touch, elevating the music's ambiance and enjoyment. Switch between EQ modes – BASS, MIDDLE, TREBLE, and normal – to customize your sound experience.
【Compact and Portable Design】The speaker includes various accessories such as magnetic base stickers, suction cup sticker, and lanyard, offering different installation methods. With its compact size of 4.3cm in diameter and 3.4cm in height, the speaker is easy to carry and use on the go.

Specifications:
BT Version: BT5.0
BT Protocol: A2DP, HFP
Speaker Power: 3W
Bone Conduction Transducer: 4W Max
Frequency Response: 100-18kHz
Max Sound Volume: about 110dB
Battery Capacity: 3.7V 450mAh
Working Time: 4-6 hours
Charging Time: about 1.5 hours
Charging Port: Type-C
Waterproof Rate: IP54
Material: Aluminum alloy, ABS
Color: Black, White (Optional)
Item Size: Approx. 4.3*3.4cm/1.69*1.33in
Item Weight: Approx. 55g/1.94oz
Package Size: 8.5*8.5*5.0Cm/3.34*3.34*1.97in
Package Weight: 154g/5.43oz

Package List:
1 * BT speaker
1 * Lanyard
1 * Suction Cup Pad
1 * Sticker
3 * Magnetic Pads
1 * Type-c Charge Cable
1 * User Manual (English)