This Dunlop party speaker has several useful features, supports Bluetooth and radio. There is also an aux input if Bluetooth is not available. The device can be powered both by the speaker itself and by the included remote control.
Specifications of Dunlop wireless speaker
Input voltage: 5.0V DC
Bluetooth range: 10 M
Pairable (TWS): Yes
Battery capacity: 1200 mAh
Playback time with battery: up to 5.5 hours
Bluetooth frequency range: 2402 - 2480 MHz
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