Sena 3s intercom: Review of the smallest intercom ever

    Sena 3s intercom

    Welcome back to, international No. 1 portal on motorcycle intercoms.

    In this article, we will discuss one of the best-selling intercoms from the Sena house: the Sena 3s

    Sena 3s: Sena 3s Intercom Review, Audio Test, and Instructions.

    The Sena 3s B and 3s W intercoms are Sena’s entry-level, and are the American company’s most affordable devices.

    They are specially designed for those who travel alone or want to communicate only with their passengers.

    Keep reading and discover all the features of the Sena 3s intercom.

    Why choose Sena 3s

    The Sena 3s comprises two submodels: the 3SB and the 3SW.

    The two intercoms are virtually identical in terms of performance, and their only difference lies in their structure:

    • Sena 30s B has a boom microphone (ideal for modular helmets)
    • Sena 30s W has a wired microphone (ideal for full-face helmets)

    Their features are almost identical: they allow you to pair two devices via Bluetooth (such as an iPhone, sat-nav, or your passenger‘s intercom).

    They have everything needed to meet the primary needs of a motorcyclist: handling incoming and outgoing calls, receiving directions (if connected to the navigator), music playback, and a range in intercom mode of about 200 m.

    Unlike later models (such as the Sena SMH5 or SMH10), the 3s has a slightly poorer performance (you can’t connect more than two devices, nor the app, doesn’t come with voice commands, and you cannot listen to the FM radio), but it still provides you 8 hours of battery life in working mode and 7 days in standby mode.

    Both intercoms can be installed on any helmet and are fully waterproof.

    Unlike the later models, the Sena 3s is slightly bulky, so before you buy it, make sure there is a small recess (at ear level) in your helmet to fit it, otherwise, you are likely to find it slightly annoying.

    In contrast, the Sena 30s B and W are not universal, so they cannot be connected to the intercoms of different brands. Both benefit from noise suppression technology to make conversations clearer and more pleasant.

    What you will find in the box

    Inside the package of the Sena 3s you will find:

    • 1 3s control unit
    • 1 Clamp-on helmet mount kit, with boom microphone (in the case of 3s B) or wire (in the case of 3s W).
    • 1 USB charging and upgrade cable
    • 1 Aux 3.5mm cable
    • 1 Adhesive helmet mount
    • 2 Earphone pads
    • 2 Velcro straps for earphones
    • 2 Microphone sponges
    • 1 Allen wrench

    Range of action

    The range for these two devices is up to 200m.

    As always, theoretically, without obstacles inbetween and in good weather conditions.


    The audio quality of Sena 3s is good, up to about 100km/h; after that, you are likely to experience some minor communication issues.

    Remember that, as always, good helmet soundproofing and aerodynamic protection of your vehicle are important variables.

    The better these features are, the easier you will communicate, even at high speeds.

    As for music, the earbuds work like a charm, and the sound is crystal clear.

    Battery life

    As for the battery, the Sena 3s b and w have a battery life of 8 hours in use and 7 days in standby.

    Charging times are about 2.5 hours for both models, and you can charge the devices while riding.

    Main features and functions

    • Audio quality: very good up to 100 km/h
    • Communication distance: 200m
    • Number of connected users: 2
    • Communication type: one-to-one intercom for up to 2 people
    • Battery life: up to 8 hours of use and 7 days standby time
    • Charging time: 2.5 hours
    • Universal intercom: no
    • FM radio: no
    • Music sharing: yes
    • Automatic volume adjustment: yes
    • Voice control: no
    • Helmet compatibility: Universal
    • Compatibility with BMW TFT system: partial (more info here)
    • Waterproof: yes

    Pros and Cons


    • Super intuitive controls (+ and – buttons)
    • Price


    • Communications with only 2 users
    • Slightly bulky
    • Lack of FM radio
    • Lack of conference mode

    To whom it is addressed

    Considering its limited performance, we recommend the Sena 3s only if you are looking for an intercom for short urban trips.

    If you are looking for a device for long trips or one that allows you to communicate with a large group of motorcyclists, consider taking a look at the more advanced models, such as Sena SMH10 or Cellular Line Interphone Tour.

    Sena 3s: instructions

    Both models are easy to mount on any helmet, and by watching the video below, you’ll be able to install them yourself in just a few minutes

    How to mount intercom on a helmet

    Learn how to install Sena 3s W on your helmet


    Learn how to install Sena 3s B on your helmet


    Sena 3s Instruction Manual

    Find the Sena 3s instruction manual here: Instruction manual

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