Monster S620 Bluetooth Speaker

For listeners who want one portable speaker for home and outdoor settings, the Monster S620 combines wireless playback with a carry strap and a waterproof rating. Its feature set is aimed at flexible everyday listening rather than a fixed home audio setup.

Bluetooth 5.4, a TF card input, and hands-free calling give you more than one way to use it. The product information lists 60W output and says two compatible speakers can pair for 120W stereo playback.

Key specifications

The S620 has an IPX8 waterproof rating, built-in microphone, and two EQ modes labeled indoor and outdoor. The indoor mode is described as emphasizing bass, while outdoor mode favors treble. It can be placed vertically or on its side, and a braided lanyard makes it easier to carry or hang.

Its listed dimensions are 8.59 inches deep by 3.29 inches wide by 3.29 inches high, and it weighs 1.62 pounds. Those details put it in portable-speaker territory, though the product information does not list battery life or charging time. The included Type-C cable is for charging, the listing does not specify how long a charge lasts.

Who it’s for

It suits you if you want a single speaker that can move from a kitchen counter to a campsite or poolside spot, with the option to pair a second speaker for stereo. For example, you could hang it by its strap near a picnic table, switch to outdoor EQ, and play music from a Bluetooth-connected phone. TF card playback is another option when you want to use a card instead of streaming.

Compared with a basic speaker that only handles Bluetooth playback, the S620 adds a card input, call support, and two sound modes. It might not be a great match if you need documented battery runtime, detailed audio measurements, or a larger system for filling a demanding space, those details or capabilities aren’t established in the product information.

Included in the package

The listed package includes a Type-C charging cable and a quick start guide. Lifetime technical support is also mentioned. No other accessories are specified, so don’t assume a TF card or a second speaker is included for stereo pairing.

Practical doubts

Can it play music without Bluetooth? Yes. The product information lists a TF card input as another playback option, but it does not state which card capacities or file formats are supported.

Can one S620 create the advertised two-speaker stereo setup? No. The listing describes pairing two portable speakers for that setup, so the 120W stereo claim depends on having a second speaker.

Can it be used around water? It carries an IPX8 rating, which makes water resistance a central feature. The listing does not provide usage conditions, so don’t treat that rating as guidance for every kind of water exposure.

Should you buy it?

The S620 makes sense if you value portability, flexible playback, and the option to expand to a paired-speaker setup. Its strap, TF card input, microphone, and EQ choices give it more everyday uses than a Bluetooth-only design. The main tradeoff is missing detail on battery runtime and supported card formats. Choose it for adaptable personal or casual group listening, look for a more fully specified setup if battery endurance or measured sound performance is a deciding factor.