This is a quality detector for those of you looking for something small at a great price.
Compact Low Cost Pocket RF Detector
Avoid peeping and protect your privacy and use to expose the incoming or outgoing mobile phone call.
Compact and state-to-the-art oval design for easy carry and easy use in anytime, anywhere. It is just in size of 1-3/4" x 1" x T 1/2 " and weighs 1/3 oz.

Extreme low power consumption allows one coin type lithium battery CR2032 can last for about 30 days continuous working.
CD-06 is the smallest detector, yet professional ability. To compare with other toy-like detector (modified from mobile phone sensor), CD-06 has efficient ability in detecting 2.4 GHz wireless hidden cameras, and also mobile cellular phones that can be listening in on you.
CD-06 does not require complicated installation or any professional knowledge.
Features:
1. With advanced power saving technology, one coin type lithium CR2032 battery can last about 30 days.
2. With strap for easy attach with mobile phone antenna or key ring.
3. With battery low warning
4. Small size and light weight.
5. Ultra bright red LED for indication.
Applications:
1. Detect hidden camera in hotel, club house, shopping mall toilet, school toilet, locker room and fitting booth.
2. Indicating incoming and outgoing mobile phone calls.
Detecting Distance:
1. Wireless camera (1.2 GHz and 2.4 GHz): about 40 cm - 2 M (depending on the model and strength).
2. Cellular phone: about 1 - 5 M (depending on the strength and brand of cellular phone).
Specifications:
1. Size: L 47 x W 27 x T 12 mm (L 1-3/4" x W 1" x T 1/2")
2. Weight: about 10g or 1/3 oz (included battery)
3. Power: 3V DC (CR2032 lithium battery x1)
4. Frequency range: 400 MHz ~ 3.0 GHz
5. Warning mode: LED indication
6. Color: Blue