JBL Portable Boombox,

Specifications:

1. Sound description: Two 20mm tweeters, two 4-inch woofers and two double
bass boosters can bring powerful stereo sound up to 60W
2. Battery description: 24-hour music playback built-in 20,000mAh
rechargeable lithium-ion battery, which can support continuous music playback
for about 24 hours (under standard test environment), and it can also charge
other devices through dual USB ports
3. Indoor/outdoor sound effects: There are two sound modes, indoor and
outdoor. Enjoy deep bass and rich sound in indoor mode; switch to outdoor mode,
the sound is more open, the bass is stronger, and the playback time is
longer.
4. Product parameters;
Bluetooth version: Bluetooth 4.2
Support: A2DP 1.3, AVRCP1.6, HFP1.6
Transducer: 2↑4" woofer, 2 20mm tweeters
Output power: 2X30W (AC power supply); 2X20W (Battery power supply)
Frequency response: 50Hz-20KHz
Signal to noise ratio: 80dB
Power supply: 20V/4A
Battery charging time: <6.5h
Battery type: lithium ion polymer 74Wh
Music playback time: up to 24h (due to volume and audio content)
Bluetooth transmitter power: 0-9dBm
Bluetooth transmitter frequency range: 2.402- 2.480GHz
Bluetooth transmitter modulation: GFSK, π/4DQPSK, 8DPSK