Aiwa RS-X 150 Natsukasii Pro (Brown) Bluetooth Speaker With Powerful Bass, Built-In Microphone, Portable Speaker With 12+ Hours Play Time, 60W Speaker, Type-C Charging, TWS Dual-Link Technology

Aiwa RS-X 150 Natsukasii Pro (Brown) Bluetooth Speaker With Powerful Bass, Built-In Microphone, Portable Speaker With 12+ Hours Play Time, 60W Speaker, Type-C Charging, TWS Dual-Link Technology

The Aiwa RS-X 150 Natsukasii Pro is a portable retro-styled Bluetooth speaker in a brown finish, built around a triple-driver layout and DSP processing for a fuller, more even sound than a single-driver portable can manage. Aiwa India states a 60 W power output, Bluetooth 5.0 streaming and up to 12 hours of playback at 50 percent volume from its built-in 6000 mAh lithium battery, so it is sized for long listening sessions at home, on a terrace or at a small gathering without staying tethered to a charger.

Key features

• 60 W power output as stated by Aiwa India
• Triple-driver design for wider sound distribution
• DSP technology for processed, balanced playback
• Bluetooth 5.0 with TWS Dual-Link pairing for two speakers
• Up to 12 hours playback at 50 percent volume
• Type-C charging, full charge in about 2 hours at DC 5 V / 2 A
• Built-in microphone for hands-free phone calls
• Playback via Bluetooth, USB, TF card and AUX input

Triple drivers with DSP

Three drivers share the work instead of one driver trying to cover the whole range, which helps vocals stay clear while the low end keeps its weight. Aiwa lists a frequency response of 125 Hz to 16 kHz and a signal-to-noise ratio above 60 dB. DSP processing shapes the output in real time, keeping the balance controlled as the volume rises, which suits a speaker that will play everything from old film songs to podcasts and party playlists in the same evening.

Retro design, portable format

The Natsukasii Pro line is styled with premium retro looks inspired by classic guitar-amp-era hardware, and this brown variant leans into that warm, vintage character. Under the styling it remains a practical portable: a rechargeable lithium battery, a power display so you can see the remaining charge, and straightforward controls. It sits as comfortably on a bookshelf or study desk as it does on a picnic table, and the retro cabinet makes it a piece you leave on display rather than hide away.

Connections and TWS pairing

Bluetooth 5.0 handles everyday wireless streaming from a phone, tablet or laptop, while USB and TF card playback cover music stored on a drive or card, and the AUX input takes any wired source. TWS Dual-Link technology pairs two RS-X 150 speakers so they play as a left and right stereo pair, widening the soundstage for larger rooms. The built-in microphone turns the speaker into a hands-free option for phone calls between songs.

Battery and charging

The built-in 6000 mAh lithium battery is rated by Aiwa for up to 12 hours of playback at 50 percent volume, and a full recharge takes about 2 hours over the Type-C port at DC 5 V / 2 A. Playback time will be shorter at full volume and longer at modest levels, as with any battery speaker. The on-board power display removes the guesswork, so you know when to top it up before a long session.

Choose the RS-X 150 Natsukasii Pro if you want a retro-styled portable with genuine multi-driver sound, long battery life and the flexibility of Bluetooth, USB, TF and AUX playback in one cabinet. It covers daily listening, calls and small gatherings without extra equipment, and a second unit can be added later for true stereo through TWS.