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Product data
Specifications.
General8
SpecificationSony MDR-RF4000K Wireless HeadphonesSennheiser 505948 Wired Headphones
- Brand
- Sony MDR-RF4000K Wireless Headphones: Sony
- Sennheiser 505948 Wired Headphones: Sennheiser
- Model
- Sony MDR-RF4000K Wireless Headphones: MDR-RF4000K Wireless Headphones
- Sennheiser 505948 Wired Headphones: 505948 Wired Headphones
- Model Number
- Sony MDR-RF4000K Wireless Headphones: MDR-RF4000K
- Sennheiser 505948 Wired Headphones: 505948
- Release date
- Sony MDR-RF4000K Wireless Headphones: 11th February 2010
- Sennheiser 505948 Wired Headphones: 8th June 2016
- Colour
- Sony MDR-RF4000K Wireless Headphones: Black
- Sennheiser 505948 Wired Headphones: Grey
- Type
- Sony MDR-RF4000K Wireless Headphones: Headphones
- Sennheiser 505948 Wired Headphones: Headphones
- Headphone Type
- Sony MDR-RF4000K Wireless Headphones: Over-Ear
- Sennheiser 505948 Wired Headphones: Over-Ear
- Connectivity
- Sony MDR-RF4000K Wireless Headphones: Wireless
- Sennheiser 505948 Wired Headphones: Wired
Product details6
SpecificationSony MDR-RF4000K Wireless HeadphonesSennheiser 505948 Wired Headphones
- Microphone
- Sony MDR-RF4000K Wireless Headphones: No
- Sennheiser 505948 Wired Headphones: Yes
- Connector Size
- Sony MDR-RF4000K Wireless Headphones: 3.5mm
- Sennheiser 505948 Wired Headphones: 3.5mm
- Foldable
- Sony MDR-RF4000K Wireless Headphones: Yes
- Sennheiser 505948 Wired Headphones: —
- Weight (g)
- Sony MDR-RF4000K Wireless Headphones: 300.50
- Sennheiser 505948 Wired Headphones: 160.00
- Cord Length (Metres)
- Sony MDR-RF4000K Wireless Headphones: —
- Sennheiser 505948 Wired Headphones: 1.4
- Driver Type
- Sony MDR-RF4000K Wireless Headphones: —
- Sennheiser 505948 Wired Headphones: Dynamic
Connectivity features1
SpecificationSony MDR-RF4000K Wireless HeadphonesSennheiser 505948 Wired Headphones
- Bluetooth
- Sony MDR-RF4000K Wireless Headphones: Yes
- Sennheiser 505948 Wired Headphones: No
Battery features1
SpecificationSony MDR-RF4000K Wireless HeadphonesSennheiser 505948 Wired Headphones
- Battery Life
- Sony MDR-RF4000K Wireless Headphones: 8 hours
- Sennheiser 505948 Wired Headphones: —
Sound features3
SpecificationSony MDR-RF4000K Wireless HeadphonesSennheiser 505948 Wired Headphones
- Impedance (Ohms)
- Sony MDR-RF4000K Wireless Headphones: —
- Sennheiser 505948 Wired Headphones: 18
- Sensitivity (dB)
- Sony MDR-RF4000K Wireless Headphones: —
- Sennheiser 505948 Wired Headphones: 112
- Frequency Response Range
- Sony MDR-RF4000K Wireless Headphones: —
- Sennheiser 505948 Wired Headphones: 16Hz-22,000Hz
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