Features:
1, Unique rugged square design.
2, IPX6 waterproof function makes it perfect for outdoor and bathing use.
3, Enjoy an impressive crystal clear sound quality and robust bass realized through 2 x 3W audio drivers and passive subwoofer.
4, Connect with Bluetooth-enabled device or just plug in with the 3.5mm audio cable to start your tunes.
5, Tap-to-pair with NFC technology for easy and instant connection (If your device has NFC function).
6, Built-in 2000mAh rechargeable battery enables 8-10 hours of playtime.
7, Small and lightweight, with a lanyard for easy on-the-go use.

Specification:
Model: S20
Bluetooth Handsfree: Yes
Bluetooth Version: V4.0
Operating Range: 10m
Total Power: 3W*2
Built-in Battery Capacity: 2000mAh
Battery Type: Li-ion battery
Music Playtime: 8-10 hours
Power Supply: 3.7V DC

Parameters:
Channel: 1.0
Interface: 3.5mm, USB 2.0
Microphone: Yes
SNR: 68dB
Sensitivity: 80dB
Frequency Response: 2.4GHz-2.48GHz
Impedance: 4ohm
FM Radio: Yes
FM Frequency: FM78.8-FM106.1
Storage Card Type: TF
Size: 10cm x 9cm x 5cm