CSR's BlueCore Now Designed Into Over 1,000 Customer Products; BenQ M315 Rounds Up the Total.

CAMBRIDGE, England -- CSR plc (LSE:CSR):

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CSR plc, the world's leading provider of Bluetooth technology, today confirmed its strong leadership position in the rapidly growing Bluetooth market with the news that over 1,000 end products now use its BlueCore Bluetooth technology. CSR's BlueCore features in 69% of end-products qualified during 2004, as publicly listed on the Bluetooth website http://qualweb.bluetooth.org. This clearly demonstrates that CSR leads this industry, having achieved almost ten times as many design wins as its closest competitor.

CSR's 1,000th design win is the BenQ M315 - a stylish new tri-band multimedia handset from one of the world's leading mobile phone manufacturers. The BenQ M315 GSM handset offers an innovative hotkey to establish a fast and simple connection to a Bluetooth headset. CSR's BlueCore also featured in BenQ's uniquely styled P30 Symbian handset launched in 2003. On 7th June, it was announced that the Taiwan-based BenQ Group is to acquire Siemens' entire mobile phone business to help the company meet its goal to become one of the world's leading mobile phone makers.

CSR's sustained success in retaining market shares in excess of 60% for seven consecutive quarters stems from its practice of continually developing its BlueCore silicon, working with its customers to offer designers the most competitive solution for integrating Bluetooth into their end products. CSR's focus on the technology, costs and product design have created a formula that has seen the Cambridge UK based company play a role in bringing to fruition some of the leading mass market products available today.

Aside from the sheer number of design wins CSR has won since the birth of Bluetooth, proof of CSR's leadership can also be seen today in the higher-speed (3Mbps) Bluetooth EDR market. One year after the launch of the Bluetooth v2.0+EDR specification, CSR's BlueCore4 remains the only EDR silicon inside any qualified end-products. As shown on the Bluetooth qualification website today, Dell, MSI, Toshiba, NEC, Cellink, Hewlett Packard and Apple all use CSR's EDR silicon. The market for EDR is expected to grow rapidly as product manufacturers migrate more of their products to benefit from the higher data rates and lower power consumption figures available with CSR's BlueCore4 product family for EDR.

Mobile phones remain by far the largest single market for Bluetooth silicon, so it is appropriate that the 1,000th design for CSR is inside BenQ's M315 GSM phone. In 2004 CSR supplied its BlueCore silicon for 55% of all Bluetooth-enabled handset designs. Figures for the first quarter of 2005 indicate that the company continues to clearly lead this market with tier one cellphone companies continuing to choose CSR's silicon: Nokia, Samsung, Motorola, BenQ, Panasonic, LG, Sharp, Pantech, RIM, NEC, HTC.

John Hodgson, CEO of CSR commented, "It is significant that our 1,000th design win be with BenQ, which is taking over Siemens' mobile phone business and setting itself up to be one of the largest names in the mobile phone industry." Hodgson continued, "CSR's success is testament to the superiority of BlueCore technology, which now has grown to account for over 50% of volume Bluetooth silicon shipments. We look forward to our next 1,000 design wins."

About CSR

CSR plc is the leading global provider of Bluetooth technology and has developed expertise in other single-chip wireless communication standards such as Wi-Fi (IEEE802.11). CSR offers developed hardware/software solutions for Bluetooth based around BlueCore, a fully integrated 2.4 GHz radio, baseband and microcontroller.

CSR is now producing its fourth generation BlueCore devices. BlueCore4 supports the Enhanced Data Rate (EDR) standard which was ratified at the end of 2004. BlueCore4 remains the only EDR silicon to be shipping in volume today. In November 2004 CSR launched UniFi, the first single chip 802.11a/b/g embedded solution specifically targeting the mobile phone and consumer electronics markets.

BlueCore features in over 51 per cent of all Bluetooth devices shipped and over 60 per cent of all qualified Bluetooth enabled products and modules listed on the Bluetooth website with industry leaders including Nokia, Dell, Panasonic, Sharp, Motorola, IBM, Apple, NEC, Toshiba, RIM and Sony using BlueCore devices in their range of Bluetooth products.

In March 2005, CSR acquired Clarity Technologies Inc., for its Clear Voice Capture (CVC) technology that enhances the audio performance of any voice-based product or system. Applications for CVC include wireless headsets, handsets and automotive hands free systems.

CSR has its headquarters in Cambridge, UK, and offices in Richardson, Texas, USA; Tokyo, Japan; Seoul, Korea; Taipei, Taiwan; Aalborg, Denmark; and Lund, Sweden.

More information can be found at www.csr.com and the partner web site www.btdesigner.com.

More information about Bluetooth technology can be found on the SIG web site at www.bluetooth.com.