Audio technica ATW-T1006 EX ไมโครโฟนไร้สายแบบ Cardioid (2.4 GHz) (Boundary Mic)

Specifications: 
Maximum Input Sound Level: 139 dB SPL 
RF Power Output: 10 mW 
Spurious Emissions: Following federal and national regulations 
Power Supply: 100-240V AC (50/60 Hz) to 5V DC 0.5A switched mode external USB-type power supply 
Battery: 3.7V rechargeable lithium-ion battery 
Battery Life: 9 hours 
Charging Time: Approx. 4.5 hours (for 0-100% charge) 
Switches: Touch-sensitive, capacitive-type user switch function: toggle (talk on power up), momentary on, momentary off; Low-cut filter: flat, roll-off; Gain: -6 dB, 0 dB, +6 dB

Dimensions: 96.8 mm (3.81") W × 38.0 mm (1.50") H × 122.8 mm (4.83") D 
Net Weight: 415 g (14.6 oz) 
Accessories Included: AC Adaptor (USB-type), USB charging cable