Sennheiser Smart Control app No In-ear SENNHEISER Black 55 g Internal Lithium-ion Bluetooth 5.2 Yes 110 dB 1.5 hours Yes Yes Both with ear adapters 7 mm - iOS- Android 5 - 21,000 Hz Earbud Yes - Android- iOS No Yes Silicone 10 m - Google Assistant- Siri 2 years Yes Yes

Smart Control app L-shaped 3.5 mm jack Over-ear SENNHEISER Black 238 g Internal Lithium-Polymer Yes Bluetooth 5.0 Yes 108 dB Up to 30 hours 1.4 m 2 hours Fold-flat earcups Yes Closed USB-C Yes 32 mm - iOS- Android 18 - 22,000 Hz Yes Earcup All smartphones Yes Yes 10 m - Siri- Google Assistant 2 years Yes

Smart Control app L-shaped 3.5 mm jack Over-ear SENNHEISER Black 238 g Internal Lithium-Polymer Yes Bluetooth 5.0 Yes 108 dB Up to 30 hours 1.4 m 2 hours Fold-flat earcups Yes Closed USB-C Yes 32 mm - iOS- Android 18 - 22,000 Hz Yes Earcup All smartphones Yes Yes 10 m - Siri- Google Assistant 2 years Yes

Sennheiser Smart Control app L-shaped 3.5 mm jack Over-ear SENNHEISER Black 293 g Internal Lithium-ion Bluetooth 5.2 Yes 106 dB Up to 60 hours 1.2 m 2 hours Four integrated microphones Fold-flat earcups Yes Closed USB Type-C Yes 42 mm - Android- iOS 6 - 22,000 Hz Yes Earcup Yes - Android- iOS Yes Yes 10 m - Google Assistant- Siri 2 years Yes Yes

Sennheiser Smart Control App Over-ear SENNHEISER Black 227 g Yes Bluetooth 5.2 Yes Dynamic 106 dB Up to 50 hours 1.2 m 3 hours Fold-flat earcups Yes Closed USB Type - C Yes 37 mm - Android- iOS 10 - 22,000 Hz Yes - Earpad- Device- App Yes - iOS- Android Yes Yes Cushioned earpads 10 m - Google assistant- Siri 2 years Yes Yes

Sennheiser Smart Control App No In-ear SENNHEISER Black & graphite 72.4 g Yes Bluetooth 5.4 Yes Dynamic 107 dB 1.2m 1.5 hours Yes Yes Yes Closed Yes 7mm - Android- iOS 5 - 21,000 Hz - Touch earbuds- Device - App Yes - Android- iOS Yes Yes Silicone 10 m - Google Assistant- Siri 2 years Yes Yes

Sennheiser Smart Control App No In-ear SENNHEISER Black & copper 72.4 g Yes Bluetooth 5.4 Yes Dynamic 107 dB 1.2m 1.5 hours Yes Yes Yes Closed Yes 7mm - Android- iOS 5 - 21,000 Hz - Touch earbuds- Device - App Yes - Android- iOS Yes Yes Silicone 10 m - Google Assistant- Siri 2 years Yes Yes

Sennheiser Smart Control app No In-ear SENNHEISER Black 55 g Internal Lithium-ion Bluetooth 5.2 Yes 110 dB 1.5 hours Yes Yes Both with ear adapters 7 mm - iOS- Android 5 - 21,000 Hz Earbud Yes - Android- iOS No Yes Silicone 10 m - Google Assistant- Siri 2 years Yes Yes

Sennheiser Smart Control app L-shaped 3.5 mm jack Over-ear SENNHEISER White 293 g Internal Lithium-ion Bluetooth 5.2 Yes 106 dB Up to 60 hours 1.2 m 2 hours Four integrated microphones Fold-flat earcups Yes Closed USB Type-C Yes 42 mm - Android- iOS 6 - 22,000 Hz Yes Earcup Yes - Android- iOS Yes Yes 10 m - Google Assistant- Siri 2 years Yes Yes

Sennheiser Smart Control app L-shaped 3.5 mm jack Over-ear SENNHEISER White 293 g Internal Lithium-ion Bluetooth 5.2 Yes 106 dB Up to 60 hours 1.2 m 2 hours Four integrated microphones Fold-flat earcups Yes Closed USB Type-C Yes 42 mm - Android- iOS 6 - 22,000 Hz Yes Earcup Yes - Android- iOS Yes Yes 10 m - Google Assistant- Siri 2 years Yes Yes

Sennheiser Smart Control app L-shaped 3.5 mm jack Over-ear SENNHEISER White 293 g Internal Lithium-ion Bluetooth 5.2 Yes 106 dB Up to 60 hours 1.2 m 2 hours Four integrated microphones Fold-flat earcups Yes Closed USB Type-C Yes 42 mm - Android- iOS 6 - 22,000 Hz Yes Earcup Yes - Android- iOS Yes Yes 10 m - Google Assistant- Siri 2 years Yes Yes

1000555 Ear-Cup (Over the Ear) Sennheiser Impact SC 660 Black Built-in Microphone, Stereo Headset Double-sided USB Binaural Double