True Wireless Bluetooth Speaker makes you indulge in music world totally with TWS function.  Bluetooth 4.2 technology helps you to fast and stable connect with your devices.  Pick up hands-free call and redial with built-in high definition mic, you will never miss any important call while enjoying music simultaneously.  IP55 Waterproof and hook design is a good choice for your outdoor activities.

Features:
[Bluetooth 4.2+EDR]

With Bluetooth 4.2+EDR technology, it's fast and stable connect with Bluetooth-enabled devices.  Lossless and low latency transmission.
[Hands-free Call]
Pick up hands-free call and redial with built-in high definition mic, you will never miss any important call while enjoying music simultaneously. 
[TWS Function]
To achieve TWS function, you can buy the other rock ridge speakers. True wireless sound makes you indulge in music world totally. 
[IP55 Waterproof Dustproof]
With protective flap sealed, it can protect the speaker from water. No afraid of rain drops when you are outdoor. Hook design allows you to take it outside conveniently. 
[Charging for Your Devices]
USB Output 5V/1A provides power for your devices. Give an emergency when your devices are low power.   Built-in 4400mAh lithium battery, it provides 8 hours of talking time, 10 hours of music time and 120 hours of standby time.

Specification:
Model: ZF-506
 Bluetooth: 4.2+EDR
Frequency Response: 180-20KHz
Input: 5V/2A
USB Output: 5V/1A
Audio Output: 10W*2
Sensitivity: -80-9db
Charging Time: 4-5 hours 
Built-in Rechargeable Battery: 4400mAh / 18650 / 7.4V
Music Time: about 10 hours(depending on music volume)
Talking Time 8 hours (depending on phone volume)
Standby Time: about 120 hours
Item Size: Approx. 17 * 9 * 8cm /  6.69 * 3.54 * 3.15in
Item Weight: Approx. 673g / 23.73oz
Package Size: Approx. 18 * 10.3 * 8.8cm /  7.09 * 4.06 * 3.46in
Package Weight: Approx. 890g / 31.39oz

Package List:
1 * Speaker
1 * Audio Cable 
1 * Charging Cable 
1 * Hook
1 * User Manual