Best Outdoor Wireless Bluetooth speaker with USB and battery power supply:

Frequency: 160Hz-20KHz	Metallic Design
Output Power: 2.0W	Portable Design
Noise Ratio: ≥90 db	Wireless bluetooth audio transmission
Charging Voltage: 5V	Many classic colors for choice
Working Voltage: 3.7V	LINE connection
Speaker: 4Ω 3W	Hands-free
Total Harmonic Distortion(THD): ≤0.1% 1KHz/1.8W	Support TF card and MP3 play
Size: φ74mm*H45.5mm	With FM function
Bluetooth Distance: 10M

Products details of Best Outdoor Wireless Bluetooth speaker with USB and battery power supply:

1. Power supplier: lithium battery: 3.7-4 . 2 V DC: 5V , 600MA Li-ion battery
2. Work current: < 30mA (Bluetooth module)
3. Work current: < 400mA (power amplifier, Bluetooth )
4. Standby current: < 3mA
5. Frequency range : 2.401-2 . 480 GHz (2.4GHz ISM Segment)
6. The receiver sensitivity: < -90dBm, BER < 0.1%*SNR: 95dB
7. Distortion: < 0.2%
8. Frequency Response: 20HZ-20kHZ

Feature of Best Outdoor Wireless Bluetooth speaker with USB and battery power supply:
1. Scope: < 10 meters of wireless communication (consistent with the Bluetooth protocol specifications CLASS 2)
2. Transmit power: Class2 less than 4dbm, low radiation.
3. Spread spectrum: Frequency Hopping Spread Spectrum
4. Bluetooth version: compatible with V2.1, V2.0, V1.1 and V1.2 standard.
5. Bluetooth protocol support: A2DP, AVRCP.