GLX-D+ Dual Band Digital Wireless is the perfect solution for musicians and presenters who want to go wireless with confidence, and without complexity. With new Dual Band Wireless Technology, GLX-D+ can operate in both 2.4 and 5.8GHz, more than doubling the available bandwidth while also intelligently avoiding interference for reliable, dropout-free audio. Featuring the industry standard BETA 58A vocal microphone, the new GLXD24+/B58 Dual Band Vocal System delivers superior, transparent digital audio. The perfect combination of the automatic frequency management with new Dual Band Technology provides reliable and consistent performance, while Shure proprietary Lithium-Ion rechargeable batteries provide up to 12 hours of use. Go wireless without complication. Features Compatibility: With Frequency Manager: Up to 11 compatible systems in typical setting, and up to 16 under ideal conditions; Without Frequency Manager: Up to 4 compatible systems in typical setting, and up to 8 under ideal conditions System Operating Range: Indoors: Up to 30 m (100 ft.) typical, with a maximum of 60 m (200 ft.) under ideal conditions; Outdoors: Up to 20 m (65 ft.) typical, with a maximum of 50 m (165 ft.) under ideal conditions Transmit Mode: Shure Proprietary Digital - Dual Band (2.4 GHz and 5.8 GHz) Audio Frequency Response: 20 Hz 20 k - Hz Note: Dependent on microphone type Dynamic Range: 120 d - B, A-weighted RF Sensitivity: -88 d - Bm, typical Total Harmonic Distortion: 0.07%, typical RF Output Power: 10 m - W E.I.R.P. max Polarity: Positive pressure on microphone diaphragm (or positive voltage applied to tip of WA302 phone plug) produces positive voltage on pin 2 (with respect to pin 3 of low-impedance output) and the tip of the high impedance 6,35 mm output. Battery Life: Up to 12 hours