Specification: 

Connection mode: Bluetooth connection
Interface type: USB
Power supply mode: Built in lithium battery
Number of speakers: 1
Function: Insert card
Operation mode: Key
Shell material: Plastic
Whether app is supported: Yes
Supported format: USB flash disk
Speaker adjustment mode: Key
Radio function: None
Box material: Plastic

Appearance size: 119*54*54mm
Product weight: 0.14 (KG)

Packing list :
Speaker + charging cable + outer packaging