Description: This PTT headset designed for two way radios can be used on motorcycles, bicycles, ATV's. Besides, the two speakers can be attached to helmets inside anywhere. And the PTT is waterproof so that you can fixed it on handlebars and need not worry about it damaged by rain water. Specifications: Color: Black Material: ABS + PU Package weight: 140g Plug: 2.5mm Speaker: Size: 58mm Sound pressure: 90db ± 3db Impedance: 32 Ω ± 15% Audio: 200mW Microphone: Size: 36mm Frequency: 20-16000HZ Sensitivity: -36dB ± 2dB Impedance: 2.2k Ω Applicable models: For MOTOROLA T-series: T270, T280, T289, T4800, T4900, nT5000, T5100, T5146, T5200, T5300, T5320, T5400, nT5410, T5412, T5420, T5422, T5428,T5728,T5500, nT5512, T5522, T5532, T5550, T5600, T5620, T5700, nT5710, T5720, T5725, T5800, T5820, T5900, T5920, nT5950, T6200, T6210, T6220, T6222, T6250, T6300, nT6310, T6320, T6400, T6500, T6510, T6550, T7100, nT7150, T7200, T7400, T7450 Series,T7618,T5228, nSpirit GT / GT plus, FR50, FR60, XTL446, SX700, nFV200, FV500 etc. Package List: 1 x Headset