Bluetooth version: CSR4.0
Frequency: 2.402-2.480GHz.
Maximum output power: 3W
MIC sensitivity: -32db.
Receiving sensitivity: Better than + 82dBm.
Distance: 10meters.
Data transmission: Up to 3Mbps
UART data transfer rate: 115200bps.
Charge voltage: 4.8V -5.5V DC.
Operating voltage: 3.7V -4.2V DC.
Working current: 300MA.
Quiescent Current:> 1UA.
Battery capacity: 2500MAH

• Color: Black, Red, Wine Red, Blue
• Extra-Large Capacity Battery : Built-in 2500 mAh battery allows 10 hours playing time and charge your cell phones when in urgent need in outdoor.
• HD Acoustic Sound : Two 8W strong drivers and passive radiator provide high definition audio and clarity at any listening level
• Bluetooth 4.0 Connectivity : Connection range is up to 33 feet, enables you to enjoy the sound without wires
• Handy and Portable: Portable and suitable features guarantee better user experience when playing music in outdoor hiking/biking. Additionally, comes with a pouch and hand strap, it's very convenient to carry this speaker everywhere.

Color: Black, Red, Wine Red, BlueLansheng International