Monster Superstar S310 Wireless Bluetooth Speaker - Black / Portable Bluetooth Speakers 5.0 with TWS Pairing Deliver Rich Bass, Dynamic Stereo Sound, Built-in Mic, Wireless Speakers for Home or Outdoor Use, IPX5 Water Resistance Wireless speaker / MS11902 / MS11902

The Monster Superstar S310 is a portable Bluetooth 5.0 speaker built for both indoor and outdoor listening, with deep bass, TWS pairing for stereo, a built-in microphone for hands-free calls and an IPX5 water-resistance rating. It streams from any Bluetooth device and is sold in this black finish under the code MS11902.

The S310 was designed by Noel Lee and the Monster Design Team, drawing on 40 years of sound engineering. The tuning aims at robust deep bass with clear highs and the finer detail in between, held together without distortion, which is the balance small speakers usually trade away to chase bass alone.

The video shows the S310 in the hand and in use, which answers the two things a specification list cannot: how large the speaker actually is, and how it carries sound in a room. It covers the speaker being used indoors and outdoors, the two settings Monster designed this model to move between.

The S310 holds a connection to a paired device at ranges of up to 100 feet, including in environments that would break a shorter link. In practice that means the phone can stay indoors while the speaker plays on a patio, or sit in a bag while you ride, without playback dropping every few metres.

An IPX5 rating means the S310 resists splashes, rain and light spray, so it copes in the shower, beside a pool, on the beach or clipped to a bike. It is protection against the weather and incidental water rather than immersion, which is the distinction that decides where a speaker like this can safely go.

Linking two S310 speakers through one device with True Wireless Stereo pairing splits playback into independent left and right channels, giving 360-degree sound across the space between them. Two units placed apart recreate a surround effect that a single speaker cannot produce, whatever its volume, because stereo depends on separation.

The S310 arrives with a micro USB charging cable and a quick start guide, along with a lanyard for carrying it or hanging it up. That is everything needed to charge the speaker and start playing, with no separate adapter or app purchase required before the first use.

A high-capacity rechargeable lithium-ion battery gives up to 24 hours of continuous playback at moderate volume, so the speaker runs from morning through to night on one charge. Integrated speakerphone functionality uses the built-in microphone, letting the same unit handle a call without unpairing from the device streaming to it.