Features:
1) Emits multi-frequency ultrasonic signals to drive away mosquitoes
2) One replaceable button cell battery (included) for outdoor and indoor use
3) Effectively covers an area up to 6 to 8 square feet (0.5 to 0.7 square
meters)
4) Completely portable - with "Built-In" strap for wrist and ankle placement
and "Clip-on" attachment for belts and pockets
5) Red LED indicator for test
6) Safe around children, pets, electronics and computers
7) Patent No. 03345748.4