Defender FreeMotion B640 (63641)
 | Expecting restock Design: in-ear; Connection type: wireless; Bluetooth version: Bluetooth v5.0; Range (m): 10; Impedance (Ohm): 16; Frequency range (Hz): 20 – 20000; Sensitivity (dB): 92; Speaker size (mm): 9; Volume control; Operating time (music) (h): 5; Charging port: microUSB; |
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in-ear, wireless, Bluetooth v4.1, waterproof, 20 – 20000 Hz, 16 Ohm, battery: 110 mAh, up to 7 h
in-ear, wireless, Bluetooth v4.2, 20 – 20000 Hz, battery: up to 8.5 h, with case + charging time — 2 hours
for active sports, in-ear, wireless, Bluetooth v5.0, waterproof, 20 – 20000 Hz, 16 Ohm, battery: up to 8 h
in-ear, wireless, true wireless, Bluetooth v5.0, active noise cancellation, voice assistant, waterproof, 20 – 20000 Hz, 16 Ohm, battery: 35 mAh, up to 4 h, with case + 12 h
in-ear, wireless, true wireless, Bluetooth v5.0, AAC, aptX, 20 – 20000 Hz, 16 Ohm, battery: up to 6 h, with case + 24 h
in-ear, wireless, true wireless, Bluetooth v5.2, AAC, active noise cancellation, voice assistant, waterproof, 20 – 20000 Hz, 16 Ohm, battery: up to 8 h, with case + 34 h
in-ear, wireless, true wireless, Bluetooth v5.3, AAC, 20 – 20000 Hz, 16 Ohm, battery: 35 mAh, up to 4 h, with case + 20 h
in-ear, wireless, true wireless, Bluetooth v5.3, AAC, 20 – 20000 Hz, 16 Ohm, battery: 40 mAh, up to 5 h, with case + 25 h
in-ear, wireless, true wireless, Bluetooth v5.0, AAC, aptX, waterproof, 20 – 20000 Hz, 16 Ohm, battery: 60 mAh, up to 7 h
in-ear, wireless, true wireless, Bluetooth v5.0, voice assistant, waterproof, 20 – 20000 Hz, 16 Ohm, battery: up to 6 h, with case + 15 h
in-ear, wireless, true wireless, Bluetooth v5.3, active noise cancellation, 20 – 20000 Hz, 16 Ohm, battery: 45 mAh, up to 5.5 h
Defender FreeMotion B640
Type:in-ear
Connection:Bluetooth v5.0
Frequencies:20 – 20000 Hz
Sensitivity:92 dB
Battery:up to 5 h
All specifications
Specifications FreeMotion B640
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E-Catalog UK editor, Headphones
Olexandr Cherkashche…, edited 08.04.2026
The information in the model description is for reference purposes.
Always clarify the specifications and configuration of the product with the online store manager before purchasing.
Catalog Defender 2026 - new arrivals, bestsellers, and the most relevant models Defender.
Always clarify the specifications and configuration of the product with the online store manager before purchasing.
Catalog Defender 2026 - new arrivals, bestsellers, and the most relevant models Defender.
Everything You Need to Know About Headphones: A Complete Technical GuideThe choice begins with understanding the design and features.
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Series Defender FreeMotion (wireless)Compare using chart →
gaming, built-in player, overhead, closed, combined, detachable cable, 3.5 mm, Bluetooth v5.3, foldable, 20 – 20000 Hz, 32 Ohm, battery: 800 mAh, up to 32 h, with case + 70 hours without backlight
built-in player, overhead, closed, combined, detachable cable, 3.5 mm, Bluetooth v5.0, foldable, 20 – 20000 Hz, battery: 200 mAh, up to 5 h
overhead, closed, combined, detachable cable, 3.5 mm, Bluetooth v5.3, 20 – 20000 Hz, 32 Ohm, battery: 360 mAh, up to 14 h
