Side by side comparison and review of Sennheiser HD 1 In-Ear Wireless and Erato Apollo 7S. Compare design, sound quality and other key specifications and features to simplify the choice of your perfect headphones. Our goal is to make it easier for you to decide on the headphones that will best meet your expectations by revealing the main differences between the products.
| DESIGN AND DIMENSIONS | Sennheiser HD 1 In-Ear Wireless | Erato Apollo 7S |
|---|
| Product Type | Earphones - Bluetooth - wireless - NFC | True wireless earphones - Bluetooth - wireless | |
|---|---|---|---|
| Width | - | 1.54 cm | |
| Depth | - | 2.22 cm | |
| Weight | - | 4 g | |
| Dimensions & Weight Details | - | Charging case: 6.25 cm x 4 cm x 2.55 cm / 52 g | |
| Colour | - | Black | Space grey | Rose gold | Silver | |
| Protection | - | Weatherproof, sweat-resistant, IPX5 | |
| Recommended Use | Portable electronics | Portable electronics | |
| Bluetooth Range (Operating Distance) | - | 10 m |
| SOUND QUALITY | Sennheiser HD 1 In-Ear Wireless | Erato Apollo 7S |
|---|
| Headphones Form Factor | In-ear | In-ear | |
|---|---|---|---|
| Headphones Technology | Dynamic | - | |
| Connectivity Technology | Wireless | Wireless | |
| Wireless Technology | Bluetooth | Bluetooth | |
| Bluetooth Version | Bluetooth 4.1 | Bluetooth 4.1 | Both headphones have the same Bluetooth version. |
| Bluetooth Profiles | Hands-Free Profile (HFP), Headset Profile (HSP), Advanced Audio Distribution Profile (A2DP), Audio/Video Remote Control Profile (AVRCP) | Hands-Free Profile (HFP), Headset Profile (HSP), Advanced Audio Distribution Profile (A2DP), Audio/Video Remote Control Profile (AVRCP) | |
| Sound Output Mode | Stereo | Stereo | |
| Sound Effects | - | 3D Surround Sound | |
| Frequency Response | 15 - 22000 Hz | 20 - 20000 Hz | Sennheiser HD 1 In-Ear Wireless offer a larger frequency range than Erato Apollo 7S. |
| Total Harmonic Distortion (THD) | <0.5% | - | |
| Sensitivity | - | 100 dB | |
| Impedance | - | 16 Ohm | |
| Max Sound Pressure | 112 dB | - | |
| Diaphragm | - | 5.8 mm | |
| Features | - | Bluetooth aptX technology |
| MICROPHONE | Sennheiser HD 1 In-Ear Wireless | Erato Apollo 7S |
|---|
| Form Factor | - | Built-in | |
|---|---|---|---|
| Type | On-cable | - | |
| Microphone Operation Mode | Omni-directional | Omni-directional | |
| Sensitivity | -44 dBV/Pascal | -42 dB |
| REMOTE CONTROL | Sennheiser HD 1 In-Ear Wireless | Erato Apollo 7S |
|---|
| Controls | - | Volume, answer/end, play/pause, next/previous track |
|---|
| CABLE | Sennheiser HD 1 In-Ear Wireless | Erato Apollo 7S |
|---|
| Cable Type | USB charge cable | USB charge cable |
|---|
| BATTERY AND CHARGING | Sennheiser HD 1 In-Ear Wireless | Erato Apollo 7S |
|---|
| Battery Type | Headphone battery rechargeable - lithium polymer | Headphone battery rechargeable | |
|---|---|---|---|
| Battery Capacity | 170 mAh | - | |
| Battery Life | 10 hour(s) | 4 hours | Sennheiser HD 1 In-Ear Wireless lasts longer on a single charge than the Erato Apollo 7S. |
| Battery Life Details | - | Continuous talk: up to 4 hours Continuous playback: up to 3 hours |
|
| Charging Time | 1.5 hour(s) | - |
| OTHERS | Sennheiser HD 1 In-Ear Wireless | Erato Apollo 7S |
|---|
| Included Accessories | Carrying case, 4 pairs of earpads (extra small, small, medium, large) | 3 pairs of Comply foam ear tips, charging case, 3 pairs of ear stabilisers (small, medium, large) |
|---|
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