Alt Model #
E35 Red : 
T450 (Black) : T450 On Ear Headphones (Black)
T450 (Blue) : T450 On Ear Headphones (Blue)
T450 (White) : T450 On Ear Headphones (White)
C300SI : C300SI On Ear Headphones
Series #
E35 Red : On Ear Headphones
T450 (Black) : On Ear Headphones
T450 (Blue) : On Ear Headphones
T450 (White) : On Ear Headphones
C300SI : On Ear Headphones
T450 (Black)
T450 (Blue)
T450 (White)
Highlights
Warranty(Months)
E35 Red : 12
T450 (Black) : 12
T450 (Blue) : 12
T450 (White) : 12
C300SI : 12
Specifications
Driver
E35 Red : 40 mm Dynamic driver
T450 (Black) : Dynamic 32mm
T450 (Blue) : Dynamic 32mm
T450 (White) : Dynamic 32mm
C300SI : High power magnetic drivers
Impedence
E35 Red : 32 Ohm
T450 (Black) : -
T450 (Blue) : -
T450 (White) : -
C300SI : 32 Ohm
Frequency Range
E35 Red : 20Hz – 20kHz
T450 (Black) : 20-20kHz
T450 (Blue) : 20-20kHz
T450 (White) : 20-20kHz
C300SI : 20-20kHz
Design
E35 Red : Over the head
T450 (Black) : Over the head
T450 (Blue) : Over the head
T450 (White) : Over the head
C300SI : On the ear
Color
E35 Red : Red
T450 (Black) : -
T450 (Blue) : -
T450 (White) : -
C300SI : -
Additional Features
Plug
E35 Red : 3.5 mm
T450 (Black) : 3.5 mm
T450 (Blue) : 3.5 mm
T450 (White) : 3.5 mm
C300SI : 3.5 mm
Lightweight
E35 Red : 
T450 (Black) : 
T450 (Blue) : 
T450 (White) : 
C300SI : 
Self-adjust ear-cups
E35 Red : 
T450 (Black) : 
T450 (Blue) : 
T450 (White) : 
C300SI : 
Sound with bass
E35 Red : 
T450 (Black) : 
T450 (Blue) : 
T450 (White) : 
C300SI : 
Type
E35 Red : On ear headphones
T450 (Black) : On-ear headphones
T450 (Blue) : On-ear headphones
T450 (White) : On-ear headphones
C300SI : On Ear Headphones
Wired/ Wireless
E35 Red : Wired
T450 (Black) : Wired
T450 (Blue) : Wired
T450 (White) : Wired
C300SI : Wired