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Connector Type
3.5mm Connectors
RCA Connectors
USB Connectors
Personal A/V Type
Personal A/V Accessories
1/8" (3.5mm) Mini- Jack
Battery Operated
LED Feedback
Ease of Installation
Beginner (Installs < 10 minutes)
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Wirelessly Stream Music to your Bluetooth Enabled Device
Calrad 40-BT3 Portable Bluetooth Stereo Transmitter
Calrad 40-BT3 Portable Bluetooth Stereo Transmitter
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USB Charging Cable Included
Calrad 40-BT3 Portable Bluetooth Stereo Transmitter
Item# 79120
Customers rated this product 3 Stars
1 customer rating
Price: Normally $53.95 
Hot Deal $49.95
Free shipping on orders over $175 - See Details


  • Wireless Bluetooth A2DP audio support
  • Signal / Power LED indicator light
  • Rechargeable battery
  • Power / Pairing button
  • Built-in 3-inch cable with 3.5mm Male plug

Essential Info

Calrad’s 40-BT3 Bluetooth Wireless Transmitter has a 3.5mm stereo input plug that can easily connect to portable audio devices for wireless Bluetooth audio playback. Play music or media content from any device with a 3.5mm headphone jack up to 35 feet away. The distance may vary with surroundings. Listen to you audio in comfort without a wired connection, includes USB charging cable as well. This transmitter works with USB power or by battery power.

For a complete Bluetooth solution add the Calrad Electronics Bluetooth Receiver to go along with your Bluetooth transmitter, receiver sold separately.

What's Included

  • 1x - Portable Bluetooth Stereo Transmitter
  • 1x - 3 Inch cable with 3.5mm male plug
  • 1x - USB Charging Cable
  • 1x - Owner's Manual
  • More Info

    Bluetooth V2.1
    Fully backward compatible with Bluetooth 2.0, 1.2 and 1.1 versions. The headline feature of 2.1 is secure simple pairing (SSP): this improves the pairing experience for Bluetooth devices, while increasing the use and strength of security

    Advanced Audio Distribution Profile (A2DP)
    This profile defines how high quality audio (stereo or mono) can be streamed from one device to another over a Bluetooth connection. A2DP is designed to transfer a uni-directional 2-channel stereo audio stream, like music from a device wit A2DP support to a receiver with A2DP support.

    A2DP relies on AVDTP and GAVDP. It includes mandatory support for the low-complexity SBC codec (not to be confused with Bluetooth's voice-signal codecs such as CVSDM), and supports optionally: MPEG-1, MPEG-2, MPEG-4, AAC, and ATRAC, and is extensible to support manufacturer-defined codecs, such as apt-X. Some Bluetooth stacks enforce the SCMS-T digital rights management (DRM) scheme. In these cases, it is impossible to connect certain A2DP headphones for high quality audio.


    ManufacturerCalrad, Calrad Electronics
    Manufacturer Product No.40-BT3
    UPC 601520411132
    Bluetooth SpecificationsBluetooth V2.1/V1.2
    Bluetooth Profile SupportA2DP and AVRCP
    Operating Distance10 Meters Class II
    Bluetooth Frequency Range2.4GHz-2.4835GHz
    PowerRechargeable 250mAH Li-polymer battery
    Working TimeUp to 10 Hours
    Standby Time230 hours
    Charging TimeAbout 2 hours
    Charging InputDC 5V/300mA
    Dimensions1.820" L x 1.330" W x 0.327" H

    Important notes:
    Only defective exchanges for identical item within 30 days of purchase. No other returns allowed on this item. For defective returns after 30 days, please contact the manufacturer.
    Manufacturer contact information: Calrad Electronics, Tel: (323) 465-2131


    USB Charging Cable Included       
    USB Charging Cable Included       


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