Ever tried to power a tiny speaker that fizzles out after a couple of hours? You want loud, punchy bass that lasts all day without lugging a heavy amp. Sony delivers a compact solution that keeps the music going from sunrise to sunset. The ULT30Bs 24 hour battery and ULT bass boost solve the short-playtime frustration youve been dealing with.
Sony SRS ULT30B Portable Bluetooth Speaker Black 24H Battery
This portable Bluetooth speaker is built for anyone who moves - from weekend hikers to city commuters. Its compact body, shoulder strap, and IP66/67 rating let you place it on a bike rack, a camp table, or a kitchen counter and still hear clear vocals and deep bass.
Benefits
- All-day playback means you never miss a beat.
- ULT button adds instant bass punch for party vibes.
- Two-way driver design keeps vocals crisp while bass thumps.
- Shoulder strap frees your hands for any activity.
- Quick 10-minute charge gives two hours of music fast.
- Bluetooth 5.2 ensures stable connection even in crowded spots.
Features
- 2-way active driver system
- Dedicated woofer and tweeter
- Side passive radiator for deeper bass
- IP66/IP67 water and dust protection
- USB-C fast charge port
- 24 hour built-in battery
- Multipoint Bluetooth pairing
- Echo-cancelling microphone for calls
Specifications
| Loudspeakers |
| Woofer |
Yes |
| Tweeter diameter |
2 cm |
| Number of tweeter drivers |
1 |
| Tweeter |
Yes |
| Number of drivers |
2 |
| Number of speakers |
2 |
| Audio |
| Frequency range |
20 - 20000 Hz |
| Ports & interfaces |
| Bluetooth profiles |
A2DP, AAC, AVRCP, HFP, HSP, SBC, SPP |
| Frequency range |
20 - 20000 Hz |
| Bluetooth version |
5.2 |
| Bluetooth |
Yes |
| Wi-Fi |
Yes |
| Connectivity technology |
Wireless |
| Design |
| International Protection (IP) code |
IP66, IP67 |
| Product colour |
Black |
| Product type |
Stereo portable speaker |
| Performance |
| Equalizer |
Yes |
| Card reader integrated |
No |
| Recommended usage |
Universal |
| Power |
| Power consumption (typical) |
0.5 W |
| USB Type-C charging port |
Yes |
| DC input voltage |
5 V |
| Battery life (max) |
24 h |
| Battery type |
Built-in battery |
| Weight & dimensions |
| Weight |
1.2 kg |
| Height |
113 mm |
| Depth |
79 mm |
| Width |
256 mm |
| Packaging content |
| Cables included |
USB Type-C |
| Other features |
| Frequency range |
20 - 20000 Hz |
