Features:
1) 1 x AA battery (not included)
2) Up to 3 extra hours of talk time
3) Up to 90 hours of standby time
4) Aluminum case
5) Adapter changeable (see available adapter at bottom)
6) Charging current: 300mA maximum (varies with usage conditions)
7) Adds up to 240mAh to devices battery per AA battery
8) Typical efficiency: 70%-93%%
9) Open-circuit output voltage: 5.7V
10) One indicator LED light
11) Can talk on phone when charging
12) Custom logo or company name can be printed on the product for promotional purpose