The set is included opened-back headphones, 
leather pads and cable.
 
Technical specifications:
- Planar magnetic drivers for better dynamics and frequency response
- Style: over-ear, opened-back
- Premium leather for style and durability
- Double-sided magnetic structure
- Magnetic structure: proprietary magnet array
- Magnet type: Neodymium N52
- Transducer size: 100 mm
- Maximum power handling: 5W RMS
- Frequency response: 10Hz – 20kHz
- THD: < 0.1% 100dB
- Impedance: 45 ohms
- Sensitivity: 93 dB/1mw (at Drum Reference Point) 
 
Sash Tres 45 Ohms needs amplifier with about 1,5-2 Watt on channel. 
There are natural leather pads, cable in the set. 
Available connector to device: 2,5mm balanced, 3,5mm; 4,4mm balanced, 6,35 mm; 4 pin xlr balanced. 
Cable length can be from 0,5 m to 2 m. 
Colours are available with matte or glossy varnish.
Sash Tres can be closed or semi-opened, so you may additionally order closed covers and/or semi-opened covers for this model.