| Specifications | Cellphone | MP3 Player | PDA | 12V Battery | Handheld Video Games | iPod/iPhone | Handheld GPS | Laptop | Satellite Phone | Digital Camera |
|---|---|---|---|---|---|---|---|---|---|---|
| R15-300 (5W) | best | best | best | best | ||||||
| R-7 (7W) | best | best | best | best | ||||||
| R15-600 (10W) | best | best | best | best | best | best | best | better | better |
|
| R-14 (14W) | best | best | best | best | best | best | best | better | better |
|
| R15-1200 (20W) | best | best | best | best | best | best | best | good | better | better |
| R-21 (21W) | best | best | best | best | best | best | best | good | best | best |
| R-28 (28W) | best | best | best | best | best | best | better | best | best | best |
