Bluetooth / Equipped with earphone jacks that correspond to 5.1 channel Center Mic mode / Up to 3 hours of operating time from AAA # Record from afar; through Bluetooth wireless technology for secure recordings, the Bluetooth Wireless Microphone for Camcorders communicates from distances approximately 100 meters (328.08 feet). It also features two-way communication, and you can shoot while still talking to a friend from the camcorder (with an unobstructed view between microphone and camcorder). The microphone and Receiver unit are even equipped with earphone jacks that correspond to "5.1ch Center Mic" mode. Compatible with almost every camcorder with Active Interface Shoe # Even when far away (up to 100 meters or 328.08 feet) from the camcorder, you can shoot while recording whole conversations with each other # 2 separate earphones are provided for both the microphone and the receiver units # Records in true 5.1 Channel center Sound with compatible HandycamŽ models # Volume control buttons for voice monitoring with earphones # Operating time: 3 hours; 9 hours (standby) # Select the recording voice of just the subject, or both the subjects and the recorders voices # Material: ABS (Receiver) # Battery Type: AAA alkaline dry batteries/AAA Ni-MH rechargeable batteries (Transmitter) # Power Supply: Active Interface Shoe (16pin) -Receiver # Microphone: Electoret Condenser Microphone, Monaural, non-directional # Included Accessories: # 1 x Microphone (transmitter) # 1 x Receiver # 1 x Armband # 1 x Windscreen # 2 x Earphone # 1 x Earphone hanger # 1 x Carrying pouch # Unit Dimensions (Receiver): 1 15/16 W x 2 5/8 H x 2 1/8 D inches (Receiver), Weight: 2.1oz