... and listening go the bird, meeting, taking part in a concert, and visiting athletic contest. Any illegal eavesdropping and ... Disposable operating time: ≥6 hours 14. Power source: A 9V battery 15. Main engine outward appearance: ABS engineering ... A main engine, a earphone, a sound cover, a audio frequency duplication line, the mirror cloth, a big of drying agent, a instruction booklet, a certificate ...