Features:
Bone conduction speaker, a DIY sound experience, place it on different surfaces such as plastics storage box, , wooden desk can provide you various sound effects.
Features 5.0 chip supporting connection and True Stereo-enabled.
Quality sound effect, up to 115db powerful sound , full bass and loud treble.
Built-in 400mAh , up to 6 hours playing after 1 hour fully charged.
and compact size, convenient to carry and perfect decoration.
Used as allows you to listen to , have conversations or conference calls, and even enjoy an fine sound experience of your playing games, videos or movies.

Specifications:
version: BT5.0
Audio format: MP3, AC3, AAC, WAV...
Output : 3W
Frequency response: 20-20kHz
SNR: ≥70dB
-: 400mAh batterys, Type-c DC5V/0.4A
Material: alloy
Color: black, , red (optional)
Qty: 1 , 2  (optional)
Package size: 
70*70*50mm/2.76*2.76*1.97in(1 )
145*75*50mm/5.71*2.95*1.97in(2 )
Package weight: 
85g/3oz(1 )
190g/6.7oz(2 )

Packing List:
Package1:
1* speaker
1*Lanyard
1*Suction cup
1*Adhensive
1*Type-c cable
Package2:
2* speaker
2*Lanyard
2*Suction cup
2*Adhensive
2*Type-c cable