The Philips SHE3700 is not even listed on the Philips USA site.
However I did find it listed at Philips Australia.
Here are the specs for the SHE3580, SHE3590/10 (the successor) and the SHE3700 (from the respective pdf leaflets) you can draw your own conclusions -
SHE3580 (
http://www.usa.philips.com/c-p/SHE3580_28/in-ear-headphones/specifications)
Sound
• Frequency response: 12 - 23 500 Hz
•Impedance: 16 ohm
• Maximum power input: 50 mW
• Sensitivity: 102 dB
•Type: Dynamic
SHE3590BK/10 (
http://www.usa.philips.com/c-p/SHE3590BK_10/in-ear-headphones/support)
Leaflet Version:4.2.8, PDF file, 394.6 kB, published May 13, 2014
Sound
• Frequency response: 12 - 23 500 Hz
•Impedance: 16 ohm
• Maximum power input: 20 mW
•Sensitivity: 103 dB
•Type: Dynamic
• Speaker diameter: 8.6 mm
SHE3700/00 (Australia) (
http://www.philips.com.au/c-p/SHE3700BK_00/headphones )
Sound
• Acoustic system: Closed
• Voice coil: copper
• Frequency response: 11- 22 000 Hz
•Impedance: 16 ohm
• Maximum power input: 20 mW
• Sensitivity: 105 dB
• Speaker diameter: 8.6 mm
•Type: Dynamic
• Diaphragm: PET