Philips ActionFit TASN503BK vs. Sennheiser CX 400BT

Headphones Comparison, Reviews and Tests

In depth comparison and review of Philips ActionFit TASN503BK and Sennheiser CX 400BT. Compare design, audio features, functions and other important specifications to easily choose the right headphones for you. Our goal is to help you uncover differences between the products and find the headphones that will best fit your needs.

Headphones Specifications Comparison

Philips ActionFit TASN503BK vs. Sennheiser CX 400BT Comparison Chart
DESIGN AND DIMENSIONS Philips ActionFit TASN503BK Sennheiser CX 400BT
Product Type Earphones - Bluetooth - wireless True wireless earphones - Bluetooth - wireless
Height 8 cm -
Width 8 cm -
Depth 3 cm -
Weight 14.5 g -
Dimensions & Weight Details - Earbud: 6 g
Charging case: 37 g
Colour Black White | Black
Protection Waterproof, sweat-resistant -
Design Sports -
Recommended Use Portable electronics Portable electronics
Bluetooth Range (Operating Distance) 10 m -
SOUND QUALITY Philips ActionFit TASN503BK Sennheiser CX 400BT
Headphones Form Factor In-ear - over-the-ear mount In-ear
Headphones Technology Dynamic Dynamic
Connectivity Technology Wireless Wireless
Wireless Technology Bluetooth Bluetooth
Bluetooth Version Bluetooth 5.0 Bluetooth 5.1 Sennheiser CX 400BT have a more advanced version of Bluetooth than Philips ActionFit TASN503BK.
Bluetooth Profiles Hands-Free Profile (HFP), Headset Profile (HSP), Advanced Audio Distribution Profile (A2DP), Audio/Video Remote Control Profile (AVRCP) Hands-Free Profile (HFP), Headset Profile (HSP), Advanced Audio Distribution Profile (A2DP), Audio/Video Remote Control Profile (AVRCP)
Bluetooth Audio Codec - SBC, AAC, aptX
Sound Output Mode - Stereo
Frequency Response 20 - 20000 Hz 5 - 21000 Hz Sennheiser CX 400BT offer a larger frequency range than Philips ActionFit TASN503BK.
Total Harmonic Distortion (THD) - 0.08%
Impedance 16 Ohm -
Max Sound Pressure - 107 dB
Diaphragm PET - 6 mm 7 mm Sennheiser CX 400BT have a thicker diaphragm than Philips ActionFit TASN503BK.
Magnet Material NdFeB -
In-Cord Volume Control Yes -
MICROPHONE Philips ActionFit TASN503BK Sennheiser CX 400BT
Form Factor - Built-in
Type On-cable -
REMOTE CONTROL Philips ActionFit TASN503BK Sennheiser CX 400BT
Controls Volume control, answer/end, hold, phone/music mode, reject call, redial Volume control, answer/end, play/pause, next/previous track, reject call, pair mode, voice assistant, equaliser preset
CABLE Philips ActionFit TASN503BK Sennheiser CX 400BT
Cable Type - USB-C to USB-A cable - detachable - straight - 25 cm
FEATURES Philips ActionFit TASN503BK Sennheiser CX 400BT
Features - Voice alerts, touch control
Intelligent Assistant - Siri, Google Assistant
BATTERY AND CHARGING Philips ActionFit TASN503BK Sennheiser CX 400BT
Battery Type Headphone battery rechargeable - lithium polymer Headphone battery rechargeable - Lithium Ion
Battery Capacity - 55 mAh
Battery Life 6 hours 7 hour(s) Sennheiser CX 400BT lasts longer on a single charge than the Philips ActionFit TASN503BK.
Battery Life Details - Continuous playback (50% volume): up to 7 hours
Continuous playback (with included charging case): up to 20 hours
Standby Time 100 hours -
Charging Time - 1.5 hour(s)
Included Qty - 2
WIRELESS LINK Philips ActionFit TASN503BK Sennheiser CX 400BT
Transmission Range 10 m -
Radio Transmitter Power - 10 mW
CONNECTIONS Philips ActionFit TASN503BK Sennheiser CX 400BT
Connector Type Bluetooth
USB (power only)
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OTHERS Philips ActionFit TASN503BK Sennheiser CX 400BT
Included Accessories 3 pairs of ear tips 4 pairs of earpads (extra small, small, medium, large), charging case (420 mAh)
Compliant Standards - Bluetooth Class 1, Directive 2006/66/EC, WEEE 2012/19/EU, Directive 2013/56/EU
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