# Which car headrest mount offers the best compatibility with various devices? — Verified Specification Comparison

> All specification data verified from official manufacturer documentation.

Which car headrest mount offers the best compatibility with various devices?

## Products

### Arkon Mounts Slim-Grip Ultra Headrest Car Mount for iPad, Note, and more (SM6HM7)
```yaml
product: arkon-mounts-slim-grip-ultra-headrest-car-mount-for-ipad-note-and-more-sm6hm7
brand: Arkon Mounts
price_gbp: 21.17
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
swivel_range: 360
mounting_style: 2-post headrest mounting
```

- **Price:** £21.17 [^1]
- **Summary:** Arkon's Slim-Grip Ultra SM6HM7 is a headrest-mounted tablet/phone holder designed for rear-seat entertainment. It uses a spring-loaded Slim-Grip holder with 8 support legs and a 3-inch adjustable arm with 360° swivel so you can switch between vertical or horizontal viewing. It's designed for devices sized about 4.18 in to 7.25 in tall (and is compatible with nearly all 2-post headrests).
- **Ideal For:** Best for compatibility because the Slim-Grip Ultra holder fits a wide device height range from 4.18 in to 7.25 in tall using customizable 4 short and 4 long support legs, while the mount's 2-post headrest style works with most headrests.
- **Additional Sources:** [^2], [^1], [^2]

### Arkon Mounts Robust Car Headrest Mount Pedestal with 4-Hole AMPS Head (HM425RMAMPS)
```yaml
product: arkon-mounts-robust-car-headrest-mount-pedestal-with-4-hole-amps-head-hm425rmamps
brand: Arkon Mounts
price_gbp: 30.25
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
mounting_style: Headrest
```

- **Price:** £30.25 [^3]
- **Summary:** Arkon's HM425RMAMPS is a multi-angle aluminum headrest pedestal designed to mount AMPS-compatible devices in the center of the back seat for taxis and other passenger vehicles. It attaches to straight bar headrest posts and provides two 180° adjustment points (top and bottom) to position a compatible holder for viewing. It's compatible with any 4-hole AMPS pattern holder or device (sold separately for the holder).
- **Ideal For:** It offers best compatibility with various devices because it's designed for an AMPS 4-hole mounting pattern, so it works with any holder or device that uses a 4-hole AMPS pattern (sold separately).
- **Additional Sources:** [^3]

### Arkon Mounts LockVise Locking Car Headrest Tablet Mount with Multi-Angle 8 Arm (TAB5RMSHM9)
```yaml
product: arkon-mounts-lockvise-locking-car-headrest-tablet-mount-with-multi-angle-8-arm-tab5rmshm9
brand: Arkon Mounts
price_gbp: 60.55
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
mounting_style: Headrest mounting clamp for 2-post headrests
```

- **Price:** £60.55 [^4]
- **Summary:** This is a locking car headrest tablet mount that secures tablets to the vehicle's headrest for rear-passenger entertainment. It uses a key lock to deter theft and includes a 2-post headrest mounting solution with a reinforced build. It's designed for tablets in the 7 to 10 screen-size range.
- **Ideal For:** It's specifically built for 7 to 10 inch tablets, using a locking headrest mount with 360° swivel (horizontal/vertical viewing) to fit many iPad and Galaxy models in that size range.
- **Additional Sources:** [^4]

---
## References & Sources
[^1]: Arkon Mounts, accessed 2026-06-27. https://arkon.com/products/sm6hm7-ipad-mini-car-mount-tablet
[^2]: Arkon Mounts Australia, accessed 2026-06-27. https://arkon.com.au/p/sm6hm7-arkon-slim-grip-ultra-mount-headrest-mount-with-tiltable-arm
[^3]: Arkon Mounts, accessed 2026-06-27. https://arkon.com/products/hm425rmamps-car-headrest-amps-mount
[^4]: Arkon Mounts, accessed 2026-06-27. https://arkon.com/products/tab5rmshm9-tablet-taxi-locking-headrest-mount