MemoryExpress今天的一天限时优惠是雷蛇的Carcharias游戏耳机，该耳机原价$79.99，现在仅卖$39.99，优惠折扣达到50% off。
下面是Memory Express的产品页面资料：
Specifications
| Headphones | |
| Frequency Response | 20 – 20,000 Hz |
| Impedance | 32 O at 1kHz |
| Sensitivity (@1kHz, 1V/Pa) | 102 dB ± 4dB at 1 kHzMax |
| Input Power | 200 mW |
| Drivers | 40 mm, with neodymium Magnets |
| Microphone | |
| Frequency Response | 50 – 16,000 Hz |
| Sensitivity ( @1kHz, 1V/Pa) | -37 dB ± 4dB |
| Signal-to-Noise Ratio | 50 dB |
| Pick-up pattern | Unidirectional |
| Cable | 3 meters, Braided Fiber Sheath |
| Connector | 3.5 mm jack (headphone and mic) |