“How did you know that? Were you spying on me?” That's the response you can expect with a great product like this. This is your chance to eves drop on anyone you like. You can place in the competitions office to record their new ideas or hide it by your girlfriend's phone to make sure she stays honest and truthful. This is truly one of the best and easiest wireless bugs that will truly broadcast all those secrets you want to know directly to you! This wonderful bug has a micro transmitter that is truly small enough to hide. The receiver is mobile so you can listen from anywhere you like. The distance for transmitting and receiving is wicked; it boasts 500 meters but in open areas can be up to 1500 meters. The volume is totally adjustable. It's a great way to find out what you want to know or to catch that dishonest person in a lie. The battery is a great size; 480mAh-enough to last. This set is complete and comes with everything you need even a set of high quality headphones for listening. - Model: CW-03 - Transmission distance up to 500m (max 1500m in the open area) - The transmitter is small enough to hide - Volume adjustable - Used on unannounced visits investigation evidence collection etc. - Built-in rechargeable 480mAh battery - Package includes: - 1 x Transmitter - 1 x Receiver - 1 x 3.5mm earphone - 1 x AC 100~240V power adapter (2-flat-pin plug) - 1 x English/Chinese user manual