Drivers: 40mm, Resistance: 32hms, Sensitivity: 100dB +/- 5dB, Frequency: 20Hz - 20KHz, Playing Time: 7 Hours, Standby Time: 3 Hours, Charging Time: 2-2.5 Hours

Talk 25, HD Voice, 100 Hz - 8 kHz, -42 dBV/Pa, Bluetooth 4.0, A2DP, 47.1x16.6x20.5 mm, 8.2 g

QuietComfort 35 Wireless Headphones II

Stereo, 40mm, 96db, 32 Ohm, 20~20000Hz, 2x 3.5mm, 1.5m

Over-Ear Headphones with Microphone - Black

3.5mm, Red/Black

3.5mm, Blue/Grey

10mm, Neodymium

Bolt Plus Colourful Stylish Earbuds with Mic - Gold

USB, PeakStop, DSP, HD audio, IP telephony, HD-Voice, TNS

Bluetooth 4.1, A2DP, 30m, 20g, Black