Additional Details ------------------------------ Product description: This bundle includes the wireless WSAII Headphones and the DEUS II RC metal detector, providing the 11" FMF coil, DEUS II remote control and S-Telescopic stem. The DEUS II is very performant in all terrain and conditions, on land and sea, thanks to FMF technology. The FMF programs are covering a large spectrum of targets High sensitivity and iron discrimination 66 feet waterproof IP68. Multiple dynamic audio options : PWM, SQUARE, and more. All terrain: high performance on land and on the beach. The target signals generated by the coil are transmitted to the headphones without any delay thanks to XP radio protocol (10 times faster than any Bluetooth low latency headphones). The WSAII is a sophisticated wireless headset. Manufactured in France by XP especially for our detectors, it works with the DEUS II remote control or DEUS II WS6 Master. In the field, this ultra-fast transmission translates into better target localization. Detachable control module is perfect for connecting a wired headset (optional) or easily replacing the back phone frame. Their volume are adjustable either from the remote control, or directly by their + - keys. They also incorporate a 4-band audio equalizer, always adjustable from the remote control, to adapt all sounds to your hearing. The battery is a high performance lithium batteries. The battery type is 700 mAh with a power of 2.60 watts/hour and a weight of 12g. The battery size is around 1.1 inch. Color: Black Material: Plastic