SONY / SRS-WS1 Wearable speaker

Speakers to ware around your neck, rather than headphones. While listening to the surrounding sound like a speaker, the sound is heard around the ear like headphones. Since it uses a dedicated frequency band for wireless, it also features low delay.

Speaker
■ Model: Speaker system with built-in amplifier
■ Practical use maximum output: 1W + 1W
■ Speaker unit: Φ30mm x 2
■ Input terminal: Stereo mini jack
■ Power supply: lithium-ion battery
■ Continuous use time: About 7 hours
■ Rechargeable battery charging time: about 3 hours
■ Operating temperature range: 0 ℃ -40 ℃
■ Maximum outer dimensions (width x height x depth): About 210mm x 75mm x 205mm
■ Weight: about 335g
■ Battery weight: about 22g

Transmitter
■ Transmission frequency band: 2.4Ghz band
■ Reaching distance: about 30m (straight ahead, one speaker connected) / about 10m (straight ahead, two speakers connected)
■ Input terminal: Stereo mini jack
■ Optical digital audio input terminal (square type) (limited to fs = 48kHz PCM)
■ Power supply: AC power supply
■ Maximum outer dimensions (width x height x depth): about 76 mm x 17 mm x 45 mm
■ Weight: about 30g

Charging stand
■ Power supply: AC power supply
■ Maximum outer dimensions (width x height x depth): about 76 mm x 17 mm x 45 mm
■ Weight: about 70g
■ Accessories: Transmitter (x1), charging stand (x1), AC adapter (x2), micro USB cable (x2), audio cable (x1), optical digital cable (x1), dedicated audio cable (x1)