Huawei FreeLace CM70-C vs. Sennheiser CX 400BT

Headphones Comparison, Reviews and Tests

Detailed comparison and review of Huawei FreeLace CM70-C and Sennheiser CX 400BT. 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

Huawei FreeLace CM70-C vs. Sennheiser CX 400BT Comparison Chart
DESIGN AND DIMENSIONS Huawei FreeLace CM70-C Sennheiser CX 400BT
Product Type Earphones - Bluetooth - wireless - USB-C True wireless earphones - Bluetooth - wireless
Dimensions & Weight Details - Earbud: 6 g
Charging case: 37 g
Colour Graphite black White | Black
Protection Waterproof, sweat-resistant, rainproof, IPX5 -
Recommended Use Portable electronics Portable electronics
SOUND QUALITY Huawei FreeLace CM70-C Sennheiser CX 400BT
Headphones Form Factor In-ear In-ear
Headphones Technology Dynamic Dynamic
Connectivity Technology Wireless Wireless
Wireless Technology Bluetooth Bluetooth
Bluetooth Version - Bluetooth 5.1
Bluetooth Profiles - Hands-Free Profile (HFP), Headset Profile (HSP), Advanced Audio Distribution Profile (A2DP), Audio/Video Remote Control Profile (AVRCP)
Bluetooth Audio Codec - SBC, AAC, aptX
Noise Isolating Yes - Huawei FreeLace CM70-C are equipped with a noise isolating function.
Sound Output Mode Stereo Stereo
Frequency Response - 5 - 21000 Hz
Total Harmonic Distortion (THD) - 0.08%
Max Sound Pressure - 107 dB
Diaphragm TPU - 9.2 mm 7 mm Huawei FreeLace CM70-C have a thicker diaphragm than Sennheiser CX 400BT.
In-Cord Volume Control Yes -
MICROPHONE Huawei FreeLace CM70-C Sennheiser CX 400BT
Form Factor - Built-in
REMOTE CONTROL Huawei FreeLace CM70-C Sennheiser CX 400BT
Controls Volume, power on/off, voice assistant Volume control, answer/end, play/pause, next/previous track, reject call, pair mode, voice assistant, equaliser preset
CABLE Huawei FreeLace CM70-C Sennheiser CX 400BT
Cable Type USB-C charge cable USB-C to USB-A cable - detachable - straight - 25 cm
Plated Connector Nickel -
FEATURES Huawei FreeLace CM70-C Sennheiser CX 400BT
Features HUAWEI HiPair technology, fast charge Voice alerts, touch control
Intelligent Assistant - Siri, Google Assistant
Sensors Hall sensor -
BATTERY AND CHARGING Huawei FreeLace CM70-C Sennheiser CX 400BT
Battery Type Headphone battery rechargeable Headphone battery rechargeable - Lithium Ion
Battery Capacity - 55 mAh
Battery Life 18 hour(s) 7 hour(s) Huawei FreeLace CM70-C lasts longer on a single charge than the Sennheiser CX 400BT.
Battery Life Details - Continuous playback (50% volume): up to 7 hours
Continuous playback (with included charging case): up to 20 hours
Standby Time 288 hours -
Charging Time - 1.5 hour(s)
Included Qty - 2
WIRELESS LINK Huawei FreeLace CM70-C Sennheiser CX 400BT
Radio Transmitter Power - 10 mW
OTHERS Huawei FreeLace CM70-C Sennheiser CX 400BT
Included Accessories - 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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