Details 2.4GHz license-free operation Up to 15 beltpacks and/or all-in-one handsets on a single system 5kHz wideband audio Single or dual-channel operation Light-weight, compact design, ergonomic design, weighing 7.4 oz Rugged and reliable Voice prompts Internal antenna Up to 20 hours of battery life Uses BAT41 Batteries and AC40 Battery Charger Item Code CZ11439: MB300ES base station and BP300 beltpack with HS15 headset CZ11440: MB300ES base station and BP300 beltpack with HS15D headset CZ11408: MB300ES base station and BP300 beltpack CZ12017: BP300 beltpack and MB300ES base station EU version (ETSI compatible) Technical Specifications Antenna Type: Internal, Dual Diversity (beltpack) Transmission Modes: Continuous (Latched) or Push-to-Talk (PTT) Battery Life Latched: Up to 14 Hours PTT: Up to 20 Hours Beltpack Size: 3.4 x 2.6 x 1.5in (8.64 x 6.60 x 3.81cm) Weight BP300: 7.4oz (0.21kg) with Battery & Pouch Mic Input: Electret Headset Output: 160mw into 32W Controls (Default): Power-On/Off, Volume-Up/Down, IC-Talk, ISO-Relay Indicators: Power/Transmit/Low Battery LED & Voice Prompts Beltpack Headset Connector: Mini-DIN Beltpack Carrying Pouch: Santoprene ETSI Compatibility as of January 1, 2015 The European Telecommunications Standards Institute (ETSI) has mandated a change in the way wireless products operate in the 2.4GHz bands. This new directive, EN 300 328 v1.8.1, requires Clear-Com to modify its HME DX-Series wireless intercom products and ship only v1.8.1 compliant products into countries that require CE compliance, beginning January 1, 2015. What is EN 300 328 v1.8.1? A new ETSI standard to address interference issues within the 2.4GHz ISM band. The main changes relate to how devices communicate and allocate radio space when they are in the same area. A new \"adaptive mode\" is required, which provides a mechanism so equipment can adapt to its environment by identifying other transmissions present in the 2.4GHz band. How will this affect Clear-Com HME DX-Series products? Clear-Com has modified its HME DX-Series wireless intercom products to be v1.8.1 compliant and created new model numbers for products sold in EU countries. New HME DX-Series EU Model Numbers available here. How do I determine if my BP200, BP 210, WH200, WH220 will work with new EU compliant base stations? Check the G number, which is located on label under the battery, and cross reference to chart above. Characteristics of new v1.8.1 compliant product: Spectrum-friendly feature will no longer be available. New beltpacks will be backwards compatible with older versions of the base stations. Older versions of beltpacks will not work with new base stations. Testing is more important when installing in order to determine antenna placement and coverage area, particularly when other 2.4GHz equipment is nearby.