Bose SoundSport Free vs. KEF Mu3

Headphones Comparison, Reviews and Tests

Detailed comparison and review of Bose SoundSport Free and KEF Mu3. With our comprehensive overview, you can simply compare design, sound quality, but also other key features of both headphones and easily decide which ones are the right choice for you. Our goal is to help you identify the main differences between products and find the headphones that best fit your needs and expectations.

Headphones Specifications Comparison

Bose SoundSport Free vs. KEF Mu3 Comparison Chart
DESIGN AND DIMENSIONS Bose SoundSport Free KEF Mu3
Product Type True wireless earphones - Bluetooth - wireless True wireless earphones - Bluetooth - wireless
Weight 18 g -
Dimensions & Weight Details Headphones: 2.56 cm x 3.05 cm x 3.2 cm / 9.1 g
Charging case: 10.2 cm x 4.83 cm x 3.81 cm / 79.4 g
Earbud: 1.75 cm x 2.63 cm x 2.45 cm / 5.8 g
Charging case: 6.2 cm x 5.2 cm x 3.35 cm / 46.8 g
Colour Black | Midnight blue | Bright orange | Ultraviolet Silver grey
Protection Weatherproof, sweat-resistant, IPX4 Splashproof
Design Sports -
Recommended Use Portable electronics Portable electronics
Bluetooth Range (Operating Distance) - 10 m
SOUND QUALITY Bose SoundSport Free KEF Mu3
Headphones Form Factor In-ear In-ear
Connectivity Technology Wireless Wireless
Wireless Technology Bluetooth Bluetooth
Bluetooth Version - Bluetooth 5.0
Bluetooth Audio Codec - SBC, AAC
Active Noise Cancelling - Yes KEF Mu3 are equipped with active noice cancellation.
Sound Output Mode Stereo Stereo
Frequency Response - 20 - 20000 Hz
Max Input Power - 5 mW
Sensitivity - 104 dB/mW
Impedance - 16 Ohm
Diaphragm - 8.2 mm
MICROPHONE Bose SoundSport Free KEF Mu3
Form Factor Built-in Built-in
REMOTE CONTROL Bose SoundSport Free KEF Mu3
Controls Volume, answer/end, play/pause, next/previous track Multiple function button
BATTERY AND CHARGING Bose SoundSport Free KEF Mu3
Battery Type Headphone battery rechargeable - Lithium Ion Headphone battery rechargeable - Lithium Ion
Battery Capacity - 50 mAh
Battery Life 5 hour(s) 9 hour(s) KEF Mu3 lasts longer on a single charge than the Bose SoundSport Free.
Battery Life Details Continuous playback: up to 5 hours
Continuous playback (with included charging case): up to 15 hours
Continuous playback (noise cancelling ON): up to 9 hours
Continuous playback (with included charging case): up to 24 hours
Charging Time 2 hours -
Included Qty - 2
OTHERS Bose SoundSport Free KEF Mu3
Included Accessories USB cable, 3 pairs of ear tips (small, medium, large), charging case 4 pairs of silicone ear tips, USB-C charging cable, charging case (350 mAh)
Compatibility iPhone, iPad, iPod, Android phone -
Compliant Standards IPX4, NMB-3 Class B, CAN ICES-3 Class B, Directive 2014/53/EU IPX5
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