| Model Number | S661 |
| Model Name | OpenMove |
| Age Range Description | Adult |
| Customer Package Type | Standard Packaging |
| Upc | 850033806106 |
| Warranty Description | 2 Years |
| Headphones Ear Placement | Open Ear |
| Headphone Folding Features | In Ear |
| Earpiece Shape | Oblong |
| Theme | Sports |
| Item Weight | 29 Grams |
| Unit Count | 1.0 Count |
| Impedance | 8.5 Ohms |
| Sensitivity | 99 dB |
| Frequency Range | 20Hz - 20,000Hz |
| Audio Driver Type | Bone Conduction Driver |
| Enclosure Material | Plastic, Silicone |
| Cable Features | Without Cable |
| Water Resistance Level | Water Resistant |
| Is Electric | Yes |
| Headphone Jack | No Jack |
| Connectivity Technology | Wireless |
| Bluetooth Range | 10 Meters |
| Bluetooth Version | 5.1 |
| Control Type | Volume Control |
| UPC | 0850033806106 |
| Brand | AfterShokz |
| Form Factor | Neckband |
| Type | Headphones |
| Number Of Earpieces | Double |
| Wireless Technology | Bluetooth |
| Color | Gray |
| Model | AS660 |
| Connectivity | Bluetooth |
| MPN | AS660 |
| Microphone Type | Built-In |
| Suitable For | Live Monitoring |
A nice touch is the way the brand AfterShokz is embossed lightly, so it looks refined rather than loud.